Mayr's Database of Reactivity Parameters

Electrophiles

« Back Forward » Found 355 molecules, displaying page 1 of 1 Results per page 10|50|100|all
Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
3-chloro-benzaldehyde (in DMSO)
C7H5ClO*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
3-fluoro-benzaldehyde (in DMSO)
C7H5FO*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
3-methoxy-benzaldehyde (in DMSO)
C8H8O2*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
4-fluoro-benzaldehyde (in DMSO)
C7H5FO*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
hexanal (in DMSO)
C6H12O*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
butanal (in DMSO)
C4H8O*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
cinnamaldehyde (in DMSO)
C9H8O*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
p-nitro-cinnamaldehyde (in DMSO)
C9H7NO3*
DMSO-J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
3-methylcyclohexenone
C7H10O*
DMSO

E Param.: -29.60

*Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
3-methylcyclopentenone
C6H8O*
DMSO

E Param.: -28.90

*Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
2-methylcyclohexenone
C7H10O*
DMSO

E Param.: -27.50

*Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
(E)-1-methyl-4-(styrylsulfonyl)benzene (in DMSO)
C15H14O2S*
DMSO

E Param.: -24.69

**J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
cinnamonitrile (in DMSO)
C9H7N*
DMSO

E Param.: -24.60

*J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
ethyl cinnamate (in DMSO)
C11H12O2*
DMSO

E Param.: -24.52

**J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
diethyl 2-((julolidine-9-yl)methylene)malonate
C20H25NO4*

E Param.: -23.80

*Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
ethyl (E)-but-2-enoate (in DMSO)
C6H10O2*
DMSO

E Param.: -23.59

**J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
N,N-dimethylprop-2-enamide (in DMSO)
C5H9NO*
DMSO

E Param.: -23.54

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
diethyl 2-((1-methyl-1,2,3,4-tetrahydroquinolin-6-yl)methylene)malonate
C18H23NO4*

E Param.: -23.40

*Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
N-methyl-N-((trifluoromethyl)thio)-aniline
*

E Param.: -23.32

*Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
diethyl 4-(dimethylamino)benzylidene malonate
C16H21NO4*

E Param.: -23.10

***Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
(E)-4-phenylbut-3-en-2-one (in DMSO)
C10H10O*
DMSO

E Param.: -23.01

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
ethyl 2-methylprop-2-enoate (in DMSO)
C6H10O2*
DMSO

E Param.: -22.77

**J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
pentan-2-one (in DMSO)
C5H10O*
DMSO

E Param.: -22.30

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
cycloheptanone (in DMSO)
C7H12O*
DMSO

E Param.: -22.10

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
2-methylcyclopentenone
C6H8O*
DMSO

E Param.: -22.10

***Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
cyclohexenone
C6H8O*
DMSO

E Param.: -22.10

***Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
cycloheptenone
C7H10O*
DMSO

E Param.: -22.00

***Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
dihydro-2H-pyran-2-one
C5H6O2*
DMSO

E Param.: -21.80

**Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
diethyl 4-methoxy-benzylidene malonate
C15H18O5*

E Param.: -21.47

***Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
diphenyldiazomethane
C13H10N2*

E Param.: -21.40

-Chem. Eur. J. 2022, 28, e202201376
10.1002/chem.202201376
diethyl 4-methyl-benzylidene malonate
C15H18O4*

E Param.: -21.11

***Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
cyclopentanone (in DMSO)
C5H8O*
DMSO

E Param.: -21.00

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
furan-2(5H)-one
C4H4O2*
DMSO

E Param.: -20.70

***Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
cyclopentenone
C5H6O*
DMSO

E Param.: -20.60

***Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
diethyl benzylidene malonate
C14H16O4*

E Param.: -20.55

***Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
tert-butyl prop-2-enoate (in DMSO)
C7H12O2*
DMSO

E Param.: -20.22

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
diphenylcarbodiimide
C13H10N2*
DMSO

E Param.: -20.14

***J. Am. Chem. Soc. 2020, 142, 8383-8402
10.1021/jacs.0c01960
cyclohexanone (in DMSO)
C6H10O*
DMSO

E Param.: -19.90

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
3-methylenetetrahydropyran-2-one
C6H8O2*
DMSO

E Param.: -19.50

***Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
diethyl maleate
C8H12O4*
DMSO

E Param.: -19.49

***Eur. J. Org. Chem. 2014, , 2956-2963
10.1002/ejoc.201301779
3-methylenedihydrofuranone
C5H6O2*
DMSO

E Param.: -19.40

***Chem. Sci. 2021, 12, 4850-4865
10.1039/D0SC06628A
(E)-1,3-diphenylprop-2-en-1-one (in DMSO)
C15H12O*
DMSO

E Param.: -19.39

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
(E)-4-(4-nitrophenyl)but-3-en-2-one (in DSMO)
C10H9NO3*
DMSO

E Param.: -19.36

*J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
(E)-4-methyl-1-(4-nitrophenyl)pent-1-en-3-one (in DMSO)
C12H13NO3*
DMSO

E Param.: -19.17

*J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
(E)-4,4-dimethyl-1-(4-nitrophenyl)pent-1-en-3-one
C13H15NO3*
DMSO

E Param.: -19.15

*J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
bh 6i
*

E Param.: -19.10

**Chem. Eur. J. 2010, 16, 1365-1371
10.1002/chem.200902487
ethyl prop-2-enoate (in DMSO)
C5H8O2*
DMSO

E Param.: -19.07

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
acrylonitrile (in DMSO)
C3H3N*
DMSO

E Param.: -19.05

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
diethyl 3-chloro-benzylidene malonate
C14H15ClO4*

E Param.: -18.98

***Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
bh 6f
*

E Param.: -18.90

**Chem. Eur. J. 2010, 16, 1365-1371
10.1002/chem.200902487
bh 6l
*

E Param.: -18.90

*Chem. Eur. J. 2010, 16, 1365-1371
10.1002/chem.200902487
methyl prop-2-enoate (in DMSO)
C4H6O2*
DMSO

E Param.: -18.84

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
bh6a
*

E Param.: -18.60

**Chem. Eur. J. 2010, 16, 1365-1371
10.1002/chem.200902487
methyl diazoacetate
C3H4N2O2*

E Param.: -18.50

***Chem. Eur. J. 2022, 28, e202201376
10.1002/chem.202201376
1-methylpiperidin-4-one (in DMSO)
C6H11NO*
DMSO

E Param.: -18.40

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
ethenylsulfonylbenzene (in DMSO)
C8H8O2S*
DMSO

E Param.: -18.36

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
(p-nitrophenyl)diazomethane
C7H5N3O2*

E Param.: -18.30

***Chem. Eur. J. 2022, 28, e202201376
10.1002/chem.202201376
bh 6k
*

E Param.: -18.20

*Chem. Eur. J. 2010, 16, 1365-1371
10.1002/chem.200902487
1,4-dioxaspiro[4.5]decan-8-one (in DMSO)
C8H12O3*
DMSO

E Param.: -18.20

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
dimethyl diazomalonate
C5H6N2O4*

E Param.: -18.20

***Chem. Eur. J. 2022, 28, e202201376
10.1002/chem.202201376
phenyl isothiocyanate
C7H5NS*
DMSO

E Param.: -18.15

***J. Am. Chem. Soc. 2020, 142, 8383-8402
10.1021/jacs.0c01960
diethyl 4-cyano-benzylidene malonate
C15H15NO4*

E Param.: -18.06

***Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
jul(t-Bu)2QM
*

E Param.: -17.90

****Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
bh6j
*

E Param.: -17.90

**Chem. Eur. J. 2010, 16, 1365-1371
10.1002/chem.200902487
oxan-4-one (in DMSO)
C5H8O2*
DMSO

E Param.: -17.90

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
hex-3-yn-2-one
C6H8O*

E Param.: -17.90

-Angew. Chem. Int. Ed. 2019, 58, 17704-17708
10.1002/anie.201909803
diethyl fumarate
C8H12O4*
DMSO

E Param.: -17.79

***Eur. J. Org. Chem. 2014, , 2956-2963
10.1002/ejoc.201301779
carbon disulfide
CS2*
DMSO

E Param.: -17.70

***J. Am. Chem. Soc. 2020, 142, 8383-8402
10.1021/jacs.0c01960
diethyl 4-nitrobenzylidene malonate
C14H15NO6*

E Param.: -17.67

***Chem. Eur. J. 2008, 14, 9675-9682
10.1002/chem.200801277
(E)-3-(4-cyano-phenyl)-1-phenyl-prop-2-en-1-one (in DMSO)
*
DMSO

E Param.: -17.64

***J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
cyclobutanone (in DMSO)
C4H6O*
DMSO

E Param.: -17.50

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
(E)-2,6-di-tert-butyl-4-(3-(4-methoxyphenyl)allylidene)cyclohexa-2,5-dien-1-one
C24H30O2*
DMSO

E Param.: -17.42

***Org. Lett. 2020, 22, 2182-2186
10.1021/acs.orglett.[...]
(E)-3-(4-nitro-phenyl)-1-phenyl-prop-2-en-1-one (in DMSO)
*
DMSO

E Param.: -17.33

***J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
bh 6m
*

E Param.: -17.30

*Chem. Eur. J. 2010, 16, 1365-1371
10.1002/chem.200902487
dma(t-Bu)2QM
*

E Param.: -17.29

****Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
2,6-dimethoxy-4-(4-(dimethylamino)benzylidene)cyclohexa-2,5-dienone
C17H19NO3*

E Param.: -17.18

***Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
(E)-2,6-di-tert-butyl-4-(3-phenylallylidene)cyclohexa-2,5-dien-1-one
C23H28O*
DMSO

E Param.: -17.00

***Org. Lett. 2020, 22, 2182-2186
10.1021/acs.orglett.[...]
thian-4-one (in DMSO)
C5H8OS*
DMSO

E Param.: -16.90

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
4-phenylbut-3-yn-2-one
C10H8O*

E Param.: -16.90

-Angew. Chem. Int. Ed. 2019, 58, 17704-17708
10.1002/anie.201909803
E)-2,6-di-tert-butyl-4-(3-(4-chlorophenyl)allylidene)cyclohexa-2,5-dien-1-one
C23H27ClO*
DMSO

E Param.: -16.84

***Org. Lett. 2020, 22, 2182-2186
10.1021/acs.orglett.[...]
but-3-en-2-one (in DMSO)
C4H6O*
DMSO

E Param.: -16.76

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
2-phenylethene-1-sulfonyl fluoride
C8H7FO2S*
DMSO

E Param.: -16.63

***Angew. Chem. Int. Ed. 2016, 55, 12664-12667
10.1002/anie.201601875
butynone
C4H4O*

E Param.: -16.60

-Angew. Chem. Int. Ed. 2019, 58, 17704-17708
10.1002/anie.201909803
4-(2,2-bis(phenylsulfonyl)vinyl)-N,N-dimethylaniline
*
DMSO

E Param.: -16.53

***Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
2,6-dimethoxy-4-(4-methoxybenzylidene)cyclohexa-2,5-dienone
C16H16O4*

E Param.: -16.38

***Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
2,6-dimethyl-4-(4-(dimethylamino)benzylidene)cyclohexa-2,5-dienone
C17H19NO*

E Param.: -16.36

***Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
(E)-2,6-di-tert-butyl-4-(3-(4-nitrophenyl)allylidene)cyclohexa-2,5-dien-1-one
C23H27NO3*
DMSO

E Param.: -16.25

***Org. Lett. 2020, 22, 2182-2186
10.1021/acs.orglett.[...]
p-quinone (C-H)
C6H4O2*

E Param.: -16.19

**J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
ani(t-Bu)2QM
*

E Param.: -16.11

****Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
2,5-dichloroquinone (C-Cl)
C6H2Cl2O2*

E Param.: -16.11

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
(E)-N-benzylidene-P,P-diphenylphosphinic amide
C19H16NOP*
DMSO

E Param.: -15.89

***J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
p-nitrophenyl isothiocyanate
C7H4N2O2S*
DMSO

E Param.: -15.89

***J. Am. Chem. Soc. 2020, 142, 8383-8402
10.1021/jacs.0c01960
tol(t-Bu)2QM
C22H28O*

E Param.: -15.83

****Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
fumaronitrile
C4H2N2*
DMSO

E Param.: -15.71

***Eur. J. Org. Chem. 2014, , 2956-2963
10.1002/ejoc.201301779
1-methylsulfanylpropan-2-one (in DMSO)
C4H8OS*
DMSO

E Param.: -15.60

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
1,2-diaza-1,3-diene 1d
*
DMSO

E Param.: -15.38

***Chem. Eur. J. 2010, 16, 12008-12016
10.1002/chem.201000828
phenyl isocyanate
C7H5NO*
MeCN

E Param.: -15.38

***J. Am. Chem. Soc. 2020, 142, 8383-8402
10.1021/jacs.0c01960
1,2-diaza-1,3-diene 1f
*
MeOH

E Param.: -15.30

*Chem. Eur. J. 2010, 16, 12008-12016
10.1002/chem.201000828
1-phenylprop-2-en-1-one (in DMSO)
C9H8O*
DMSO

E Param.: -15.25

***J. Am. Chem. Soc. 2017, 139, 13318-13329
10.1021/jacs.7b05106
(E)-N-(4-(dimethylamino)benzylidene)-4-methylbenzenesulfonamide (in DMSO)
C16H18N2O2S*
DMSO

E Param.: -15.09

***J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
2,6-di-tert.butyl-4-(3-fluorobenzylidene)cyclohexa-2,5-dienone
C21H25FO*

E Param.: -15.03

***Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
1,2-diaza-1,3-diene 1c
*
DMSO

E Param.: -14.91

***Chem. Eur. J. 2010, 16, 12008-12016
10.1002/chem.201000828
1,2-diaza-1,3-diene 1e
*
MeOH

E Param.: -14.90

*Chem. Eur. J. 2010, 16, 12008-12016
10.1002/chem.201000828
3-nitro-1-tosyl-1H-indole
C15H12N2O4S*

E Param.: -14.87

***Chem. Commun. 2021, 57, 10071-10074
10.1039/d1cc04074j
4-methoxy-<i>trans-beta</i>-nitrostyrene
*

E Param.: -14.70

***J. Org. Chem. 2011, 76, 9370-9378
10.1021/jo201678u
jul-indan-1,3-dione
C22H19NO2*

E Param.: -14.68

***Org. Biomol. Chem. 2007, 5, 3020-3026
10.1039/b708025e
4-bromo-3-nitro-1-tosyl-1H-indole
C15H11BrN2O4S*

E Param.: -14.60

**Chem. Commun. 2021, 57, 10071-10074
10.1039/d1cc04074j
2-(4-methoxybenzylidene)-1,3-dithiane 1,1,3,3-tetraoxide
*
DMSO

E Param.: -14.55

***Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
((2-(2-iodophenyl)propan-2-yl)oxy)(trifluoromethyl)sulfane
*

E Param.: -14.52

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
2,6-di-tert.butyl-4-(3,5-difluorobenzylidene)cyclohexa-2,5-dienone
C21H24F2O*

E Param.: -14.50

***Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
[(1,3-Diarylallyl)Pd(PPh3)2]+ (Aryl = 4-(dimethylamino)phenyl)
*

E Param.: -14.46

***Organometallics 2012, 31, 2416-2424
10.1021/om3000357
2,6-di-tert.butyl-4-(4-nitrobenzylidene)cyclohexa-2,5-dienone
C21H25NO3*

E Param.: -14.36

***Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
4-methyl-<i>trans-beta</i>-nitrostyrene
*

E Param.: -14.23

***J. Org. Chem. 2011, 76, 9370-9378
10.1021/jo201678u
(E)-tert-butyl benzylidenecarbamate (in DMSO)
C12H15NO2*
DMSO

E Param.: -14.22

***J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
[(1,3-Diarylallyl)Pd(PPh3)2]+ (Aryl = 3,5-difluorophenyl)
*

E Param.: -14.21

***Organometallics 2012, 31, 2416-2424
10.1021/om3000357
[(1,3-Diarylallyl)Pd(PPh3)2]+ (Aryl = Ph)
*

E Param.: -14.14

***Organometallics 2012, 31, 2416-2424
10.1021/om3000357
ethyl 3-nitro-1H-indole-1-carboxylate
C11H10N2O4*

E Param.: -14.10

**Chem. Commun. 2021, 57, 10071-10074
10.1039/d1cc04074j
N-methyl maleimide
C5H7NO2*
DMSO

E Param.: -14.07

***Eur. J. Org. Chem. 2014, , 2956-2963
10.1002/ejoc.201301779
jul Meldrum's acid
C19H21NO4*

E Param.: -13.97

***J. Org. Chem. 2008, 73, 2738-2745
10.1021/jo702590s
1,2-diaza-1,3-diene 1b
*
DMSO

E Param.: -13.90

***Chem. Eur. J. 2010, 16, 12008-12016
10.1002/chem.201000828
(2-(4-methoxyphenyl)ethene-1,1-diyldisulfonyl)dibenzene
*
DMSO

E Param.: -13.88

***Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
<i>trans-beta</i>-nitrostyrene
*

E Param.: -13.85

***J. Org. Chem. 2011, 76, 9370-9378
10.1021/jo201678u
julBBS
C19H21N3O3*

E Param.: -13.84

***J. Org. Chem. 2007, 72, 9170-9180
10.1021/jo071273g
p-chloranil (C-Cl)
C6Cl4O2*

E Param.: -13.84

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
((2-phenylpropan-2-yl)oxy)(trifluoromethyl)sulfane
*

E Param.: -13.77

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
2-(p-(dimethylamino)benzylidene)-indan-1,3-dione
C18H15NO2*

E Param.: -13.56

***Org. Biomol. Chem. 2007, 5, 3020-3026
10.1039/b708025e
N-methyl-N-((trifluoromethyl)thio)-p-toluenesulfonamide
*

E Param.: -13.44

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
dma(Ph)2QM
C27H23NO*

E Param.: -13.39

****Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
Umemoto I (tetrafluoroborate)
*

E Param.: -13.39

***Eur. J. Org. Chem. 2024, 2024, e202400085
10.1002/ejoc.202400085
4-bromo-<i>trans-beta</i>-nitrostyrene
*

E Param.: -13.37

***J. Org. Chem. 2011, 76, 9370-9378
10.1021/jo201678u
p-(dimethylamino)benzylidenemalononitrile
C12H11N3*

E Param.: -13.30

***J. Org. Chem. 2003, 68, 6880-6886
10.1021/jo0344182
1,2-diaza-1,3-diene 1a
*
DMSO

E Param.: -13.28

***Chem. Eur. J. 2010, 16, 12008-12016
10.1002/chem.201000828
1,3,5-trinitrobenzene
C6H3N3O6*

E Param.: -13.19

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
Umemoto I (triflate)
*

E Param.: -13.08

***Eur. J. Org. Chem. 2024, 2024, e202400085
10.1002/ejoc.202400085
(E)-N-(4-methoxybenzylidene)-4-methylbenzenesulfonamide (in DMSO)
C15H15NO3S*
DMSO

E Param.: -13.05

***J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
2-(4-methoxybenzylidene)benzo[d][1,3]dithiole 1,1,3,3-tetraoxide
*
DMSO

E Param.: -13.02

***Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
(2-phenylethene-1,1-diyldisulfonyl)dibenzene
*
DMSO

E Param.: -12.93

***Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
benzaldehyde (in DMSO)
C7H6O*
DMSO

E Param.: -12.90

*J. Am. Chem. Soc. 2018, 140, 5500-5515
10.1021/jacs.8b01657
3,6-dinitro-1-tosyl-1H-indole
*

E Param.: -12.90

***Chem. Commun. 2021, 57, 10071-10074
10.1039/d1cc04074j
Umemoto II (triflate)
*

E Param.: -12.80

***Eur. J. Org. Chem. 2024, 2024, e202400085
10.1002/ejoc.202400085
dmaBBS
C15H17N3O3*

E Param.: -12.76

***J. Org. Chem. 2007, 72, 9170-9180
10.1021/jo071273g
p-(dimethylamino)benzylidene Meldrum's acid
C15H17NO4*

E Param.: -12.76

***J. Org. Chem. 2008, 73, 2738-2745
10.1021/jo702590s
4-cyano-<i>trans-beta</i>-nitrostyrene
*

E Param.: -12.61

***J. Org. Chem. 2011, 76, 9370-9378
10.1021/jo201678u
N-(trifluoromethyl)thio)succinimide
*

E Param.: -12.56

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
4-nitro-<i>trans-beta</i>-nitrostyrene
*

E Param.: -12.37

***J. Org. Chem. 2011, 76, 9370-9378
10.1021/jo201678u
2,4-dinitrothiophene
C4H2N2O4S*

E Param.: -12.33

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
2,5-dichloroquinone (C-H)
C6H2Cl2O2*

E Param.: -12.28

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
di-tert-butyl azodicarboxylate
*
MeCN

E Param.: -12.23

***Chem. Eur. J. 2010, 16, 11670-11677
10.1002/chem.201001598
ani(Ph)2QM
C26H20O2*

E Param.: -12.18

****Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
p-chloranil (C=O)
C6Cl4O2*

E Param.: -12.13

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
ethenesulfonyl fluoride (ESF)
*
DMSO

E Param.: -12.09

***Angew. Chem. Int. Ed. 2016, 55, 12664-12667
10.1002/anie.201601875
o-chloranil (C-Cl)
C6Cl4O2*

E Param.: -12.02

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
2-cinnamoyl-1-(2,6-dimethoxyphenyl)-3-methyl-1H-imidazol-3-ium
C21H21N2O3*
DMSO

E Param.: -12.02

***Top. Catal. 2018, 61, 585-590
10.1007/s11244-018-0[...]
N-(trifluoromethyl)thio)phthalimide
*

E Param.: -11.92

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
jul(S)BBS
C19H21N3O2S*

E Param.: -11.89

***J. Org. Chem. 2007, 72, 9170-9180
10.1021/jo071273g
2,6-diphenyl-4-benzylidenecyclohexa-2,5-dienone
C25H18O*

E Param.: -11.87

***Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
N-(difluoromethyl)thio)phthalimide
*

E Param.: -11.86

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
1-(tert-butyl)-2-cinnamoyl-3-methyl-1H-imidazol-3-ium
C17H21N2O*
DMSO

E Param.: -11.80

***Top. Catal. 2018, 61, 585-590
10.1007/s11244-018-0[...]
2-cinnamoyl-1-(4-methoxyphenyl)-3-methyl-1H-imidazol-3-ium
C20H19N2O2*
DMSO

E Param.: -11.79

***Top. Catal. 2018, 61, 585-590
10.1007/s11244-018-0[...]
2-benzylidenebenzo[d][1,3]dithiole 1,1,3,3-tetraoxide
*
DMSO

E Param.: -11.78

***Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
2,6-di-tert-butyl-4-(2,2,2-trifluoroethylidene)cyclohexa-2,5-dien-1-one
C16H21F3O*
DMSO

E Param.: -11.68

***Eur. J. Org. Chem. 2020, , 3812-3817
10.1002/ejoc.202000295
2-cinnamoyl-1,3-dimethyl-1H-imidazol-3-ium
C14H15N2O*
DMSO

E Param.: -11.52

***Angew. Chem. Int. Ed. 2012, 51, 5234-5238
10.1002/anie.201109042
(E)-N-benzylidene-4-methylbenzenesulfonamide (in DMSO)
C14H13NO2S*
DMSO

E Param.: -11.50

***J. Am. Chem. Soc. 2011, 133, 8240-8251
10.1021/ja200820m
2-cinnamoyl-1-mesityl-3-methyl-1H-imidazol-3-ium
C22H23N2O*
DMSO

E Param.: -11.48

***Top. Catal. 2018, 61, 585-590
10.1007/s11244-018-0[...]
2-(p-methoxybenzylidene)-indan-1,3-dione
C17H12O3*

E Param.: -11.32

***Org. Biomol. Chem. 2007, 5, 3020-3026
10.1039/b708025e
maleic anhydride
C4H4O3*
DMSO

E Param.: -11.31

***Eur. J. Org. Chem. 2014, , 2956-2963
10.1002/ejoc.201301779
(4-NMe2)3-tritylium ion (= Crystal violet)
*

E Param.: -11.26

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
2,2,4-trichloro-1(2H)-naphthalenone
*
MeCN

E Param.: -11.24

***Org. Lett. 2010, 12, 2238-2241
10.1021/ol100592j
dicarbonyl(cyclopentadienyl)propene-iron(II)
*

E Param.: -11.20

***Helv. Chim. Acta 2005, 88, 1754-1768
10.1002/hlca.200590137
p-fluoranil (C-F)
C6F4O2*

E Param.: -11.12

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
p-(methoxy)benzylidenemalononitrile
C11H8N2O*

E Param.: -10.80

***J. Org. Chem. 2003, 68, 6880-6886
10.1021/jo0344182
dma(S)BBS
C15H17N3O2S*

E Param.: -10.73

***J. Org. Chem. 2007, 72, 9170-9180
10.1021/jo071273g
diisopropyl azodicarboxylate
*
MeCN

E Param.: -10.71

***Chem. Eur. J. 2010, 16, 11670-11677
10.1002/chem.201001598
p-AniCH=N+Me2 (in MeCN)
C10H14NO*
MeCN

E Param.: -10.69

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
(S,E)-5-benzyl-1-((E)-3-(4-(dimethylamino)phenyl)allylidene)-2,2,3-trimethyl-4-oxoimidazolidin-1-ium
C24H30N3O*
dichloromethane

E Param.: -10.60

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
5,7,7-trichloro-8(7H)-quinolinone
*
MeCN

E Param.: -10.48

***Org. Lett. 2010, 12, 2238-2241
10.1021/ol100592j
N-fluoro-2,4,6-trimethylpyridinium tetrafluoroborate
*

E Param.: -10.46

***J. Am. Chem. Soc. 2018, 140, 11474-11486
10.1021/jacs.8b07147
aniBBS
C14H14N2O4*

E Param.: -10.37

***J. Org. Chem. 2007, 72, 9170-9180
10.1021/jo071273g
pipN+=CH-CH-Ph
C14H18N+*

E Param.: -10.30

*Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
(4-NMe2)2-tritylium ion (= Malachite green)
*

E Param.: -10.29

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
p-(methoxy)benzylidene Meldrum's acid
C14H14O5*

E Param.: -10.28

***J. Org. Chem. 2008, 73, 2738-2745
10.1021/jo702590s
bis(1,2-dimethylindol-3-yl)methylium ion
C21H21N2*

E Param.: -10.23

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
diethyl azodicarboxylate
*
MeCN

E Param.: -10.15

***Chem. Eur. J. 2010, 16, 11670-11677
10.1002/chem.201001598
Pd-allyl cation
*

E Param.: -10.11

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-benzylidene-indan-1,3-dione
C16H10O2*

E Param.: -10.11

***Org. Biomol. Chem. 2007, 5, 3020-3026
10.1039/b708025e
2-cinnamoyl-3-methyl-1-(perfluorophenyl)-1H-imidazol-3-ium
C19H12F5N2O*
DMSO

E Param.: -10.09

***Top. Catal. 2018, 61, 585-590
10.1007/s11244-018-0[...]
(lil)2CH+
C23H25N2*

E Param.: -10.04

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
N-fluoropyridinium tetrafluoroborate
C5H5FN*

E Param.: -9.89

***J. Am. Chem. Soc. 2018, 140, 11474-11486
10.1021/jacs.8b07147
1,1,3-tris(4-(dimethylamino)phenyl)allylium ion
C27H32N3*

E Param.: -9.84

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
pyrN+=CH-CH-Ph
C13H16N+*

E Param.: -9.80

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
bis(julidin-9-yl)allylium ion
*

E Param.: -9.78

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
pTolCH=N+CH2 (in MeCN)
C10H14N*
MeCN

E Param.: -9.64

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
PhCH=N+(CH2)5 (in MeCN)
C12H16N*
MeCN

E Param.: -9.60

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
indolecarboxylate derived iminium ion
*
dichloromethane

E Param.: -9.50

**Angew. Chem. Int. Ed. 2009, 48, 5034-5037
10.1002/anie.200900933
(jul)2CH+
C25H29N2*

E Param.: -9.45

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
benzylidenemalononitrile
C10H6N2*

E Param.: -9.42

***J. Org. Chem. 2003, 68, 6880-6886
10.1021/jo0344182
p-fluoranil (C=O)
C6F4O2*

E Param.: -9.37

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
PhCH=N+(CH2)4 (in MeCN)
C11H14N*
MeCN

E Param.: -9.35

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
PhCH=N+Me2 (in MeCN)
C9H12N*
MeCN

E Param.: -9.27

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
C7H9+-Fe(CO)3
*

E Param.: -9.21

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
Me2N+=CH-CH-Ph
C11H14N+*

E Param.: -9.20

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
benzylidene-Meldrum's acid
C13H12O4*

E Param.: -9.15

***J. Org. Chem. 2008, 73, 2738-2745
10.1021/jo702590s
6-nitro-tetrazolo[1,5a]pyridine
C5H3N5O2*

E Param.: -9.05

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
1,1-bis(4-dimethylaminophenyl)-3-phenylallylium ion
*

E Param.: -8.97

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
C6H6OMe+-Fe(CO)3
*

E Param.: -8.94

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
dibenzyl azodicarboxylate
*
MeCN

E Param.: -8.89

***Chem. Eur. J. 2010, 16, 11670-11677
10.1002/chem.201001598
o-chloranil (C=O)
C6Cl4O2*

E Param.: -8.77

***J. Am. Chem. Soc. 2014, 136, 11499-11512
10.1021/ja505613b
(ind)2CH+
C19H21N2*

E Param.: -8.76

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
ani(Br)2QM
C14H10Br2O2*

E Param.: -8.63

****Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
mor iminium
C13H16NO+*

E Param.: -8.60

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
fc2CH+
C21H19Fe2*

E Param.: -8.54

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(PhCH2)2N+=CH-CH-Ph
C23H22N+*

E Param.: -8.50

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
NFSI
C12H10FNO4S2*
MeCN

E Param.: -8.44

***J. Am. Chem. Soc. 2018, 140, 11474-11486
10.1021/jacs.8b07147
5-methoxyfuroxano[3,4-d]pyrimidine
C5H4N4O3*

E Param.: -8.37

***J. Phys. Org. Chem. 2003, 16, 431-437
10.1002/poc.606
p-CF3-C6H4-CH=N+Me2 (in MeCN)
C10H11F3N*
MeCN

E Param.: -8.34

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
(thq)2CH+
C21H25N2*

E Param.: -8.22

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
Jorgensen/Hayashi-iminium ion
C29H34NOSi+*

E Param.: -8.20

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
(S,E)-5-benzyl-1-((E)-3-(4-methoxyphenyl)allylidene)-2,2,3-trimethyl-4-oxoimidazolidin-1-ium
C23H27N2O2*
dichloromethane

E Param.: -8.00

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(4-NMe2)-tritylium ion
*

E Param.: -7.93

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
1-methyl-3-((julolidin-9-yl)methylene)-3H-indol-1-ium ion
C22H23N2*

E Param.: -7.79

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
C6H7+-Fe(CO)3
*

E Param.: -7.76

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(pyr)2CH+
C21H25N2*

E Param.: -7.69

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
p-tosyl isocyanate
C8H7NO3S*
MeCN

E Param.: -7.69

***J. Am. Chem. Soc. 2020, 142, 8383-8402
10.1021/jacs.0c01960
MacMillan-iminium ion (spiro)
*
MeCN

E Param.: -7.67

***Angew. Chem. Int. Ed. 2011, 50, 9953-9956
10.1002/anie.201103683
diarylallylium ion (4-NMe2)2
*

E Param.: -7.50

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
(ethene-1,1-diyldisulfonyl)dibenzene
*
DMSO

E Param.: -7.50

***Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
MacMillan-iminium ion (1st generation)
C22H25N2O+*
MeCN

E Param.: -7.37

***Angew. Chem. Int. Ed. 2011, 50, 9953-9956
10.1002/anie.201103683
(S,E)-5-((1H-indol-3-yl)methyl)-2,2,3-trimethyl-4-oxo-1-((E)-3-phenylallylidene)imidazolidin-1-ium
C24H26N3O*
dichloromethane

E Param.: -7.30

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(S,E)-5-benzyl-2,2,3-trimethyl-4-oxo-1-((E)-3-(p-tolyl)allylidene)imidazolidin-1-ium
C23H27N2O*
dichloromethane

E Param.: -7.20

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
N-methylacridinium ion
C14H12N*

E Param.: -7.15

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(dma)2CH+
C17H21N2*

E Param.: -7.02

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
6-cyano-4-nitrobenzofuroxan
C7H2N4O4*

E Param.: -7.01

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
(S,E)-2,2,3-trimethyl-4-oxo-1-((E)-3-phenylallylidene)-5-(3,4,5-trimethoxybenzyl)imidazolidin-1-ium
C25H31N2O4*
dichloromethane

E Param.: -7.00

**Angew. Chem. Int. Ed. 2013, 52, 7967-7971
10.1002/anie.201301864
bis(5-methoxy-1-methylindol-3-yl)methylium ion
C21H21N2O2*

E Param.: -6.90

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
2,3,4,5,6,6-hexachlorocyclohexa-2,4-dien-1-one
*
MeCN

E Param.: -6.75

***Org. Lett. 2010, 12, 2238-2241
10.1021/ol100592j
dimethylmethyleneammonium ion
C3H8N*

E Param.: -6.69

*Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
N-(trifluoromethyl)thio)saccharin
*

E Param.: -6.48

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
2-phenyl-1,3-dithianylium ion
C10H11S2*

E Param.: -6.43

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
4-cyano-6-nitro-benzofuroxane
C7H2N4O4*

E Param.: -6.41

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
3-(4-(dimethylamino)benzylidene)-1-methyl-3H-indol-1-ium ion
C18H19N2*

E Param.: -6.26

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
1-phenyl-propyn-1-ylium-Co2(CO)5(PPh3)
*

E Param.: -6.19

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
4-nitrobenzodifuroxan (NBDF)
C6HN5O6*

E Param.: -6.15

***Chem. Eur. J. 2007, 13, 8317-8324
10.1002/chem.200700676
(S,E)-5-benzyl-2,2,3-trimethyl-1-((E)-3-(3-nitrophenyl)allylidene)-4-oxoimidazolidin-1-ium
C22H24N3O3*
dichloromethane

E Param.: -6.10

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
N-(phenylsulfonyl)-N-((trifluoromethyl)thio)benzenesulfonamide
*

E Param.: -6.06

***Angew. Chem. Int. Ed. 2018, 57, 12690-12695
10.1002/anie.201805859
(S,E)-2,2,3-trimethyl-4-oxo-5-((perfluorophenyl)methyl)-1-((E)-3-phenylallylidene)imidazolidin-1-ium
C22H20F5N2O*
dichloromethane

E Param.: -6.00

**Angew. Chem. Int. Ed. 2013, 52, 7967-7971
10.1002/anie.201301864
(S,E)-5-benzyl-1-((E)-3-(4-cyanophenyl)allylidene)-2,2,3-trimethyl-4-oxoimidazolidin-1-ium
C23H24N3O*
dichloromethane

E Param.: -6.00

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
bis(1-methylindol-3-yl)methylium ion
C19H17N2*

E Param.: -5.99

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
2-phenyl-1,3-dithiolan-2-ylium ion
C9H9S2*

E Param.: -5.91

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(S,E)-5-benzyl-2,2,3-trimethyl-1-((E)-3-(4-nitrophenyl)allylidene)-4-oxoimidazolidin-1-ium
C22H24N3O3*
dichloromethane

E Param.: -5.90

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(2S,5S)-5-benzyl-3-methyl-4-oxo-1-(3-phenylallylidene)-2-((E)-styryl)imidazolidin-1-ium
C28H27N2O*
dichloromethane

E Param.: -5.90

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(mpa)2CH+
C27H25N2*

E Param.: -5.89

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
4-aza-6-nitrobenzofuroxan
C5H2N4O4*

E Param.: -5.86

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
Vilsmeier ion
C3H7ClN*

E Param.: -5.77

*Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(mor)2CH+
C21H25N2O2*

E Param.: -5.53

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
MacMillan-iminium ion (2nd generation)
*
MeCN

E Param.: -5.52

***Angew. Chem. Int. Ed. 2011, 50, 9953-9956
10.1002/anie.201103683
4,6-dinitrobenzofurazan
C6H2N4O5*

E Param.: -5.46

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
N-fluoro-2,6-dichloropyridinium tetrafluoroborate
*

E Param.: -5.29

***J. Am. Chem. Soc. 2018, 140, 11474-11486
10.1021/jacs.8b07147
Selectfluor
C7H14ClFN2*

E Param.: -5.20

***J. Am. Chem. Soc. 2018, 140, 11474-11486
10.1021/jacs.8b07147
methyl(phenyl)methyleneammonium ion
C8H10N*

E Param.: -5.17

*Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(E)-2-methyl-3-(4-methylbenzylidene)-3H-indol-1-ium ion
C17H16N*

E Param.: -5.15

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
4,6-dinitrobenzofuroxan
C6H2N4O6*

E Param.: -5.06

***J. Org. Chem. 2006, 71, 9088-9095
10.1021/jo0614339
(E)-2-(tert-butyl)-3-(4-methylbenzylidene)-3H-indol-1-ium
C20H22N+*
dichloromethane

E Param.: -5.06

*Eur. J. Org. Chem. 2016, , 4050-4058
10.1002/ejoc.201600572
(E)-1,2-dimethyl-3-(4-methylbenzylidene)-3H-indol-1-ium ion
C18H18N*

E Param.: -5.05

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
(E)-3-benzylidene-1,2-dimethyl-3H-indol-1-ium ion
C17H16N*

E Param.: -4.96

**J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
2-(4-methoxyphenyl)chromenylium ion
C16H13O2*

E Param.: -4.95

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
4-nitro-6-(trifluoromethylsulfonyl)benzofuroxan
C7H2F3N3O6S*

E Param.: -4.91

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
(dpa)2CH+
C37H29N2*

E Param.: -4.72

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
4,6-dinitrotetrazolopyridine
C5H2N6O4*

E Param.: -4.67

***J. Org. Chem. 2005, 70, 6242-6253
10.1021/jo0505526
9-(4-(dimethylamino)phenyl)-9H-fluoren-9-ylium
C21H30N*
dichloromethane

E Param.: -4.51

***Chem. Eur. J. 2017, 23, 623-630
10.1002/chem.201603963
(4-MeO)3-tritylium ion
*

E Param.: -4.35

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
(mfa)2CH+
C19H19F6N2*

E Param.: -3.85

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
tropylium ion
C7H7*

E Param.: -3.72

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ)
C8Cl2N2O2*
MeCN

E Param.: -3.66

***J. Am. Chem. Soc. 2013, 135, 12377-12387
10.1021/ja405890d
C7H7+-Fe(CO)3
*

E Param.: -3.49

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
flavylium ion
C15H11O*

E Param.: -3.45

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(pfa)2CH+
C29H23F6N2*

E Param.: -3.14

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(4-MeO)2-tritylium ion
*

E Param.: -3.04

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
3-(4-methoxybenzylidene)-1-methyl-3H-indol-1-ium iom
C17H16NO*

E Param.: -3.02

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
fc(ani)CH+
C18H17FeO*

E Param.: -2.90

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
1,1-dianisyl-3-phenylallylium ion
C23H21O2*

E Param.: -2.67

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
fc(Ph)CH+
C17H15Fe*

E Param.: -2.64

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
fc(Me)CH+
C12H13Fe*

E Param.: -2.57

*Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
1-methyl-3-(4-methylbenzylidene)-3H-indol-1-ium ion
C17H16N*

E Param.: -2.19

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
1,3-dithianylium ion
C4H7S2*

E Param.: -2.14

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(4-MeO,4-Me)-tritylium ion
*

E Param.: -2.13

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
(4-OMe,3-Me)-tritylium ion
*

E Param.: -1.84

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
3-benzylidene-1-methyl-3H-indol-1-ium ion
C16H14N*

E Param.: -1.80

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
(4-MeO,3-OMe)-tritylium ion
*

E Param.: -1.62

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
3-(trimethylsilyl)propyn-1-ylium-Co2(CO)6
*

E Param.: -1.60

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(4-MeO)-tritylium ion
*

E Param.: -1.59

-Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
3-phenylpropyn-1-ylium-Co2(CO)6
*

E Param.: -1.58

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
di-p-anisyl-allylium ion
*

E Param.: -1.45

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
(fur)2CH+
C17H15O2*

E Param.: -1.36

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(4-Me)3-tritylium ion
*

E Param.: -1.21

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
1-phenyl-proyn-ylium-Co2(CO)6
*

E Param.: -0.97

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
propyn-1-ylium-Co2(CO)6
*

E Param.: -0.84

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(fur)(ani)CH+
C16H15O2*

E Param.: -0.81

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(4-Me)2-tritylium ion
*

E Param.: -0.70

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
dibenzo[a,d]tropylium ion
C15H11*
dichloromethane

E Param.: -0.63

-Liebigs Ann. 1995, , 2005-2009
10.1002/jlac.1995199[...]
1,1,3-triphenylpropyn-1-ylium-Cr(CO)3
*

E Param.: -0.25

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(4-Me)-tritylium ion
*

E Param.: -0.13

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
(ani)2CH+
C15H15O2*

E Param.: 0.00

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(4-F)3-tritylium ion
*

E Param.: 0.05

*Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
methoxy-(4-methoxyphenyl)methylium ion
C9H11O2*

E Param.: 0.14

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(4-F)2-tritylium ion
*

E Param.: 0.17

*Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
(4-F)-tritylium ion
*

E Param.: 0.35

*Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
tritylium ion (Ph3C+)
C19H15*

E Param.: 0.51

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
ani(pop)CH+
C20H17O2*

E Param.: 0.61

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
9-(4-methoxyphenyl)-9H-fluoren-9-ylium
C20H27O*
dichloromethane

E Param.: 0.85

***Chem. Eur. J. 2017, 23, 623-630
10.1002/chem.201603963
1,1,3-triphenylallylium ion
C21H17*

E Param.: 0.98

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(3-F)-tritylium ion
*

E Param.: 1.01

*Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
(3-Cl)-tritylium ion
*

E Param.: 1.06

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
1,3-diphenylpropyn-1-ylium-Cr(CO)3
*

E Param.: 1.07

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
benzaldehyde-boron trichloride complex
*

E Param.: 1.12

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(3-CF3)-tritylium ion
*

E Param.: 1.18

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
di-p-tolyl-allylium ion
*

E Param.: 1.23

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
(4-CF3)-tritylium ion
*

E Param.: 1.33

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
4-chlorobenzaldehyde-boron trichloride complex
*

E Param.: 1.44

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
ani(tol)CH+
C15H15O*

E Param.: 1.48

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(3-F)2-tritylium ion
*

E Param.: 1.54

*Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
methoxy-(4-methylphenyl)methylium ion
C9H11O*

E Param.: 1.90

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(3-Cl)3-tritylium ion
*

E Param.: 1.99

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
(3-F)3-tritylium ion
*

E Param.: 2.07

*Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
ani(Ph)CH+
C14H13O*

E Param.: 2.11

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
pop(tol)CH+
C20H17O*

E Param.: 2.16

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(4-CF3)2-tritylium ion
*

E Param.: 2.28

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
N-ethylidenecarbazolium ion
C14H12N*

E Param.: 2.41

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
9-phenyl-9H-fluoren-9-ylium
C19H25*
dichloromethane

E Param.: 2.41

***Chem. Eur. J. 2017, 23, 623-630
10.1002/chem.201603963
(3-F)4-tritylium ion
*

E Param.: 2.54

*Eur. J. Org. Chem. 2011, , 6470-6475
10.1002/ejoc.201100910
diarylallylium ion (4-Cl)2
*

E Param.: 2.69

*J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
diphenylallylium ion
*

E Param.: 2.70

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
diarylallylium ion (4-Br)2
*

E Param.: 2.85

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
1-phenylcyclopent-2-enylium ion
C11H11*

E Param.: 2.89

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
pop(Ph)CH+
C19H15O*

E Param.: 2.90

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
methoxy-phenylmethylium ion
C8H9O*

E Param.: 2.97

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
1-(4-chlorophenyl)cyclopent-2-enylium ion
C11H10Cl*

E Param.: 3.20

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(tol)2CH+
C15H15*

E Param.: 3.63

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
diarylallylium ion (3-F)2
*

E Param.: 4.15

**J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
tol(Ph)CH+
C14H13*

E Param.: 4.43

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(pfp)2CH+
C13H9F2*

E Param.: 5.01

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
pfp(Ph)CH+
C13H10F*

E Param.: 5.20

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(Ftol)2CH+
C15H13F2*

E Param.: 5.24

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
benzhydrylium ion Ph2CH+
C13H11*

E Param.: 5.47

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(pcp)2CH+
C13H9Cl2*

E Param.: 5.48

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
cumyl cation
*

E Param.: 5.74

***Macromolecules 2010, 43, 1719-1723
10.1021/ma9024569
(2,4,6-trimethylphenyl)ethylium ion
C11H15*

E Param.: 6.04

*Macromolecules 2005, 38, 33-40
10.1021/ma048389o
diarylallylium ion (3,3-F2)2
*

E Param.: 6.11

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
1,3-bis(2,4,6-trimethylphenyl)but-1-ylium ion
C22H29*

E Param.: 6.16

*Macromolecules 2005, 38, 33-40
10.1021/ma048389o
(mfp)PhCH+
C13H10F*

E Param.: 6.23

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(tfm)PhCH+
C14H10F3*

E Param.: 6.70

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(dfp)PhCH+
C13H9F2*

E Param.: 6.74

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(mfp)2CH+
C13H9F2*

E Param.: 6.87

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(dfp)(mfp)CH+
C13H8F3*

E Param.: 7.52

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(tfm)2CH+
C15H9F6*

E Param.: 7.96

**J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(dfp)2CH+
C13H7F4*

E Param.: 8.02

*J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b