Mayr's Database of Reactivity Parameters

C-Nucleophiles

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
2-(trimethylsilyl)furan
C7H12OSi *
dichloromethane

N  Param.: 2.16

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-(triethylsilyl)furan
C10H18OSi *
dichloromethane

N  Param.: 2.20

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
methylenecycloheptane
C8H14 *
dichloromethane

N  Param.: 2.24

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
cyclopentadiene
C5H6 *
dichloromethane

N  Param.: 2.30

sN Param.: 1.06
*** Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
methylenecycloundecane
C12H22 *
dichloromethane

N  Param.: 2.33

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
alpha-methylstyrene
C9H10 *
dichloromethane

N  Param.: 2.35

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-(tributylsilyl)furan
C16H30OSi *
dichloromethane

N  Param.: 2.37

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
1,3-dimethoxybenzene
C8H10O2 *
dichloromethane

N  Param.: 2.48

sN Param.: 1.09
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
methylenecyclononane
C10H18 *
dichloromethane

N  Param.: 2.57

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
4-methyl-penta-1,3-diene
C6H10 *
dichloromethane

N  Param.: 2.60

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-cyclopropylpropene
C6H10 *
dichloromethane

N  Param.: 2.60

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-diazo-1-benzosuberone
C11H10N2O *
dichloromethane

N  Param.: 2.72

sN Param.: 0.96
*** Eur. J. Org. Chem. 2023, 26, e202300005
10.1002/ejoc.202300005
6-((benzyloxy)methyl)-3,4-dihydro-2H-pyran (in MeCN)
C13H16O2 *
MeCN

N  Param.: 2.81

sN Param.: 0.57
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
methylenecyclopentane
C6H10 *
dichloromethane

N  Param.: 2.82

sN Param.: 0.90
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
methylenecyclodecane
C11H20 *
dichloromethane

N  Param.: 2.82

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
5-cyano-indole
C9H6N2 *
MeCN

N  Param.: 2.83

sN Param.: 1.10
* J. Org. Chem. 2006, 71, 9088-9095
10.1021/jo0614339
(3,4-dihydro-2H-pyran-6-yl)trimethylsilane (in MeCN)
C8H16OSi *
MeCN

N  Param.: 2.87

sN Param.: 0.68
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
((3,4-dihydro-2H-pyran-6-yl)methoxy)triisopropylsilane (in MeCN)
C15H30O2Si *
MeCN

N  Param.: 2.87

sN Param.: 0.66
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
(5-methyl-furan-2-yl) pinacol boronate
*
MeCN

N  Param.: 2.90

sN Param.: 0.98
*** Chem. Sci. 2012, 3, 878-882
10.1039/c2sc00883a
3,4-dihydro-2H-pyran (in MeCN)
C5H8O *
MeCN

N  Param.: 2.98

sN Param.: 0.72
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
(Z)-1,2-diphenyl-1-(trimethylsiloxy)ethene (in MeCN)
 C17H20OSi *
MeCN

N  Param.: 3.00

sN Param.: 0.83
*** Synthesis 2019, 51, 1157-1170
10.1055/s-0037-1611634
3-methoxythiophene
C5H6OS *
MeCN

N  Param.: 3.06

sN Param.: 1.19
*** J. Am. Chem. Soc. 2013, 135, 6317-6324
10.1021/ja4017655
allyltriphenylstannane
C21H20Sn *
dichloromethane

N  Param.: 3.09

sN Param.: 0.90
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(E)-2-methyl-penta-1,3-diene
C6H10 *
dichloromethane

N  Param.: 3.09

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
1-(1-azidovinyl)-4-(trifluoromethyl)benzene
C9H6F3N3 *
dichloromethane

N  Param.: 3.10

sN Param.: 0.77
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
N-(triisopropylsilyl)pyrrole
C13H25NSi *
dichloromethane

N  Param.: 3.12

sN Param.: 0.93
*** Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-(phenylethynyl)pyrrolidin-2-one
C12H11NO *
dichloromethane

N  Param.: 3.12

sN Param.: 0.85
* Angew. Chem. Int. Ed. 2014, 53, 4968-4971
10.1002/anie.201402055
(2,3-dimethylbut-2-enyl)triethylsilane
C12H26Si *
dichloromethane

N  Param.: 3.15

sN Param.: 1.15
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
methylenecyclooctane
C9H16 *
dichloromethane

N  Param.: 3.16

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
3-diazoindolin-2-one
C8H5N3O *
dichloromethane

N  Param.: 3.16

sN Param.: 1.03
*** Eur. J. Org. Chem. 2023, 26, e202300005
10.1002/ejoc.202300005
1-(1-azidovinyl)naphthalene
C12H9N3 *
dichloromethane

N  Param.: 3.17

sN Param.: 0.88
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
cyclohepta-1,3,5-trienyl-Fe(CO)3
*
dichloromethane

N  Param.: 3.42

sN Param.: 0.94
*** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(triisopropylsiloxy)ethene
C11H24OSi *
dichloromethane

N  Param.: 3.44

sN Param.: 0.94
** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
2-diazocyclohexanone
C6H8N2O *
dichloromethane

N  Param.: 3.44

sN Param.: 0.83
*** Eur. J. Org. Chem. 2023, 26, e202300005
10.1002/ejoc.202300005
p-tosylmethyl isocyanide (TosMIC)
C9H9NO2S *
dichloromethane

N  Param.: 3.50

sN Param.: 0.76
*** Angew. Chem. Int. Ed. 2007, 46, 3563-3566
10.1002/anie.200605205
2-diazo-1-tetralone
C10H8N2O *
dichloromethane

N  Param.: 3.51

sN Param.: 0.86
*** Eur. J. Org. Chem. 2023, 26, e202300005
10.1002/ejoc.202300005
4-cyanophenyl isocyanide
C8H4N2 *
dichloromethane

N  Param.: 3.57

sN Param.: 0.72
** Angew. Chem. Int. Ed. 2007, 46, 3563-3566
10.1002/anie.200605205
2-methylfuran
C5H6O *
dichloromethane

N  Param.: 3.61

sN Param.: 1.11
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
2-(tributylstannyl)furan
C16H30OSn *
dichloromethane

N  Param.: 3.63

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
n-butyl vinyl ether
*
dichloromethane

N  Param.: 3.76

sN Param.: 0.91
***** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
3,3-dimethyl-2-(trimethylsiloxy)buten
C9H20OSi *
dichloromethane

N  Param.: 3.78

sN Param.: 0.79
** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
4-(bis(trimethylsiloxy)amino)pent-4-enoic acid methyl ester
C12H27NO4Si2 *
dichloromethane

N  Param.: 3.84

sN Param.: 0.87
*** J. Org. Chem. 2001, 66, 3196-3200
10.1021/jo0015927
4-methyl-N-(2-phenylethynyl)-N-(phenylmethyl)benzenesulfonamide
C22H19NO2S *
dichloromethane

N  Param.: 3.85

sN Param.: 0.84
*** Angew. Chem. Int. Ed. 2014, 53, 4968-4971
10.1002/anie.201402055
(Z)-1-(triisopropylsiloxy)propen
C12H26OSi *
dichloromethane

N  Param.: 3.87

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
7-azaindole
C7H6N2 *
MeCN

N  Param.: 3.87

sN Param.: 1.10
* J. Org. Chem. 2006, 71, 9088-9095
10.1021/jo0614339
ethyl-vinylether
C4H8O *
dichloromethane

N  Param.: 3.92

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
6,6-dimethylfulvene
C8H10 *
MeCN

N  Param.: 3.93

sN Param.: 0.88
*** Eur. J. Org. Chem. 2009, , 1202-1206
10.1002/ejoc.200801099
2-methyl-1-(trimethylsiloxy)propen
C7H16OSi *
dichloromethane

N  Param.: 3.94

sN Param.: 1.00
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
diazoacetone
C3H4N2O *
dichloromethane

N  Param.: 3.96

sN Param.: 0.91
*** Chem. Eur. J. 2003, 9, 4068-4076
10.1002/chem.200304913
1H-indole-5-carboxylic acid
C9H7NO2 *
MeCN

N  Param.: 3.97

sN Param.: 1.10
* J. Org. Chem. 2006, 71, 9088-9095
10.1021/jo0614339
(tris(trimethylsilyl)siloxy)ethene
*
dichloromethane

N  Param.: 4.01

sN Param.: 0.83
*** Org. Lett. 2010, 12, 5206-5209
10.1021/ol102220e
3,4,5-tris(benzyloxy)-2-((benzyloxy)methyl)-6-methylenetetrahydro-2H-pyran
C35H36O5 *
dichloromethane

N  Param.: 4.01

sN Param.: 0.91
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
potassium (1-(tert-butoxycarbonyl)-1H-indol-3-yl)trifluoroborate
C13H14BF3KNO2 *
MeCN

N  Param.: 4.06

sN Param.: 0.79
** J. Am. Chem. Soc. 2013, 135, 6317-6324
10.1021/ja4017655
1-(1-azidovinyl)-4-(chloromethyl)benzene
C9H8ClN3 *
dichloromethane

N  Param.: 4.13

sN Param.: 0.96
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
(2-methylallyl)triphenylsilane
C22H22Si *
dichloromethane

N  Param.: 4.17

sN Param.: 0.79
** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
2-(bis(tert-butyldimethylsiloxy)amino)propene
C15H35NO2Si2 *
dichloromethane

N  Param.: 4.23

sN Param.: 0.93
*** J. Org. Chem. 2001, 66, 3196-3200
10.1021/jo0015927
isobutylenyl-ethylether
C6H12O *
dichloromethane

N  Param.: 4.23

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(4,5-dihydrofuran-2-yl)trimethylsilane (in MeCN)
C7H14OSi *
MeCN

N  Param.: 4.23

sN Param.: 0.90
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
Cp2Zr(Me)2 - Dimethylzirconocene
*
dichloromethane

N  Param.: 4.35

sN Param.: 1.09
*** Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
Meldrum's acid iodonium ylide (in CH2Cl2)
*
dichloromethane

N  Param.: 4.36

sN Param.: 1.06
*** J. Am. Chem. Soc. 2016, 138, 10304-10313
10.1021/jacs.6b05768
2,3-dihydrofuran
C4H6O *
dichloromethane

N  Param.: 4.37

sN Param.: 0.90
**** Eur. J. Org. Chem. 2005, , 1760-1764
10.1002/ejoc.200400706
5-bromo-indole
C8H6BrN *
MeCN

N  Param.: 4.38

sN Param.: 1.10
* J. Org. Chem. 2006, 71, 9088-9095
10.1021/jo0614339
Cp2Ti(CH2Ph)2 - Dibenzyltitanocene
*
dichloromethane

N  Param.: 4.38

sN Param.: 1.00
* Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
N-benzyl-N-((2-methoxyphenyl)ethynyl)-4-methylbenzenesulfonamide
C23H21NO3S *
dichloromethane

N  Param.: 4.40

sN Param.: 0.86
*** Angew. Chem. Int. Ed. 2014, 53, 4968-4971
10.1002/anie.201402055
(2-methylallyl)trimethylsilane
C7H16Si *
dichloromethane

N  Param.: 4.41

sN Param.: 0.96
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
5-chloro-indole
C8H6ClN *
MeCN

N  Param.: 4.42

sN Param.: 1.10
* J. Org. Chem. 2006, 71, 9088-9095
10.1021/jo0614339
1,2-bis(trimethylsiloxy)cyclohexene
C12H26O2Si2 *
dichloromethane

N  Param.: 4.46

sN Param.: 1.15
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-(triphenylsiloxy)propene
*
dichloromethane

N  Param.: 4.46

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(1-azidovinyl)benzene
C8H7N3 *
dichloromethane

N  Param.: 4.57

sN Param.: 0.94
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
2,6-dimethylphenyl isocyanide
C9H9N *
dichloromethane

N  Param.: 4.59

sN Param.: 0.87
*** Angew. Chem. Int. Ed. 2007, 46, 3563-3566
10.1002/anie.200605205
1-(trimethylsiloxy)buta-1,3-diene
C7H14OSi *
dichloromethane

N  Param.: 4.60

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
N-(3,3-dimethylbut-1-en-2-yl)acetamide
C8H15NO *
MeCN

N  Param.: 4.61

sN Param.: 0.98
*** Chem. Eur. J. 2012, 18, 5732-5740
10.1002/chem.201103519
pyrrole
C4H5N *
dichloromethane

N  Param.: 4.63

sN Param.: 1.00
* Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
(2-methylallyl)tris(trimethylsilyl)silane
*
dichloromethane

N  Param.: 4.63

sN Param.: 0.87
*** Org. Lett. 2010, 12, 5206-5209
10.1021/ol102220e
(2-methylallyl)triphenylgermane
C22H22Ge *
dichloromethane

N  Param.: 4.67

sN Param.: 0.81
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
6-methyl-3-(phenyl-l3-iodanylidene)dihydro-2H-pyran-2,4(3H)-dione (in CH2Cl2)
*
dichloromethane

N  Param.: 4.67

sN Param.: 0.92
*** J. Am. Chem. Soc. 2016, 138, 10304-10313
10.1021/jacs.6b05768
methyl diazoacetate
C3H4N2O2 *
dichloromethane

N  Param.: 4.68

sN Param.: 0.94
*** J. Am. Chem. Soc. 2023, 145, 7416-7434
10.1021/jacs.2c13872
prenyl-tributylstannane
C17H36Sn *
dichloromethane

N  Param.: 4.74

sN Param.: 1.15
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-(bis(trimethylsiloxy)amino)propene
C9H23NO2Si2 *
dichloromethane

N  Param.: 4.76

sN Param.: 0.86
*** J. Org. Chem. 2001, 66, 3196-3200
10.1021/jo0015927
(bis(trimethylsiloxy)amino)styrene
C14H25NO2Si2 *
dichloromethane

N  Param.: 4.80

sN Param.: 0.86
* J. Org. Chem. 2001, 66, 3196-3200
10.1021/jo0015927
2-(trimethylsiloxy)buta-1,3-diene
C7H14OSi *
dichloromethane

N  Param.: 4.83

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
diazocyclopentadiene (in CH2Cl2)
C5H4N2 *
dichloromethane

N  Param.: 4.84

sN Param.: 1.06
*** Synthesis 2023, 55, 354-358
10.1055/s-0041-1737327
benzyl isocyanide
C8H7N *
dichloromethane

N  Param.: 4.90

sN Param.: 0.74
*** Angew. Chem. Int. Ed. 2007, 46, 3563-3566
10.1002/anie.200605205
ethyl diazoacetate
C4H6N2O2 *
dichloromethane

N  Param.: 4.91

sN Param.: 0.95
*** Chem. Eur. J. 2003, 9, 4068-4076
10.1002/chem.200304913
N-(3,4-dihydronaphthalen-1-yl)acetamide
C12H13NO *
MeCN

N  Param.: 4.91

sN Param.: 0.87
*** Chem. Eur. J. 2012, 18, 5732-5740
10.1002/chem.201103519
3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-6-methyl-3,4-dihydro-2H-pyran
C28H30O4 *
dichloromethane

N  Param.: 4.98

sN Param.: 0.65
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
N-vinylcarbazole
C14H11N *
dichloromethane

N  Param.: 5.02

sN Param.: 0.94
** Macromolecules 2002, 35, 5454-5458
10.1021/ma020306l
2,3-dihydrofuran (in MeCN)
C4H6O *
MeCN

N  Param.: 5.02

sN Param.: 0.63
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
1-(trimethylsiloxy)-3,4-dihydronaphthalene (in MeCN)
C13H18OSi *
MeCN

N  Param.: 5.06

sN Param.: 0.91
*** Synthesis 2019, 51, 1157-1170
10.1055/s-0037-1611634
1-(tris(trimethylsilyl)siloxy)cyclohexene
*
dichloromethane

N  Param.: 5.07

sN Param.: 0.91
*** Org. Lett. 2010, 12, 5206-5209
10.1021/ol102220e
Cp2Zr(CH2Ph)2 - Dibenzylzirconocene
*
dichloromethane

N  Param.: 5.10

sN Param.: 1.03
*** Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
(2-methylallyl)triphenylstannane
C22H22Sn *
dichloromethane

N  Param.: 5.13

sN Param.: 0.90
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
N-benzyl-N-(but-1-yn-1-yl)-4-methylbenzenesulfonamide
C18H19NO2S *
dichloromethane

N  Param.: 5.16

sN Param.: 0.85
*** Angew. Chem. Int. Ed. 2014, 53, 4968-4971
10.1002/anie.201402055
4-(1-azidovinyl)-1,1'-biphenyl
C14H11N3 *
dichloromethane

N  Param.: 5.17

sN Param.: 0.86
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
(Z)-1-phenyl-1-(trimethylsiloxy)propene (in MeCN)
C12H18OSi *
MeCN

N  Param.: 5.18

sN Param.: 0.94
*** Synthesis 2019, 51, 1157-1170
10.1055/s-0037-1611634
Dimethyl 1,1'-isopropylidenezirconocene
*
dichloromethane

N  Param.: 5.20

sN Param.: 1.00
* Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
1-(trimethylsiloxy)cyclohexene
C9H18OSi *
dichloromethane

N  Param.: 5.21

sN Param.: 1.00
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
diphenyldiazomethane
C13H10N2 *
dichloromethane

N  Param.: 5.29

sN Param.: 0.92
*** Chem. Eur. J. 2003, 9, 4068-4076
10.1002/chem.200304913
potassium allyltrifluoroborate (in MeCN)
C3H5BF3K *
MeCN

N  Param.: 5.29

sN Param.: 0.87
** J. Am. Chem. Soc. 2017, 139, 15324-15327
10.1021/jacs.7b10240
4-((benzyloxy)methyl)-2,2-dimethyl-6-methylenetetrahydrofuro[3,4-d][1,3]dioxole
C16H20O4 *
dichloromethane

N  Param.: 5.35

sN Param.: 0.88
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329