Mayr's Database of Reactivity Parameters

Nucleophiles

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
bromide (in 40% aq MeCN)
Br *
water-MeCN mix

N  Param.: 12.80

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
bromide (in 50% aq EtOH)
Br *
water-EtOH mix

N  Param.: 13.60

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
bromide (in 50% aq MeCN)
Br *
water-MeCN mix

N  Param.: 13.80

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
bromide (in 80% aq EtOH)
Br *
water-EtOH mix

N  Param.: 14.50

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
bromide (in CF3CH2OH)
Br *
TFE

N  Param.: 11.70

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
bromide (in H2O)
Br *
water

N  Param.: 11.70

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
bromite (in water)
BrO2 *
water

N  Param.: 12.75

sN Param.: 0.59
*** Org. Lett. 2018, 20, 2816-2820
10.1021/acs.orglett.[...]
bromo(phenylsulfonyl)methanide (in DMSO)
C7H6BrO2S *
DMSO

N  Param.: 23.90

sN Param.: 0.62
*** J. Org. Chem. 2017, 82, 2011-2017
10.1021/acs.joc.6b02844
bromoborane-triethylamine-complex
*
dichloromethane

N  Param.: 7.49

sN Param.: 0.75
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
BTM (in CH2Cl2)
C15H12N2S *
dichloromethane

N  Param.: 13.06

sN Param.: 0.73
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Bu4NBH4 (in DMSO)
BH4- *
DMSO

N  Param.: 14.94

sN Param.: 0.79
*** Angew. Chem. Int. Ed. 2009, 48, 1958-1961
10.1002/anie.200804263
buta-1,3-diene
C4H6 *
dichloromethane

N  Param.: -0.87

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

N  Param.: -5.40

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
chloride (in 20% aq MeCN)
Cl *
water-MeCN mix

N  Param.: 11.31

sN Param.: 0.58
*** J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in 40% aq MeCN)
Cl *
water-MeCN mix

N  Param.: 11.30

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in 50% aq EtOH)
Cl *
water-EtOH mix

N  Param.: 11.80

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in 50% aq MeCN)
Cl *
water-MeCN mix

N  Param.: 12.00

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in 50/50 MeOH/MeCN)
Cl *
MeOH-MeCN mix

N  Param.: 14.10

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in 60% aq MeCN)
Cl *
water-MeCN mix

N  Param.: 12.00

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in 80% aq EtOH)
Cl *
water-EtOH mix

N  Param.: 13.00

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in 80% aq MeCN)
Cl *
water-MeCN mix

N  Param.: 13.30

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in CF3CH2OH)
Cl *
TFE

N  Param.: 10.30

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in EtOH)
Cl *
EtOH

N  Param.: 14.70

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in H2O)
Cl *
water

N  Param.: 10.10

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in hexafluoroisopropanol)
Cl *
HFIP

N  Param.: 8.00

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in MeCN)
Cl *
MeCN

N  Param.: 17.20

sN Param.: 0.60
** J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloride (in MeOH)
Cl *
MeOH

N  Param.: 12.90

sN Param.: 0.60
* J. Am. Chem. Soc. 2005, 127, 2641-2649
10.1021/ja045562n
chloro((4-chlorophenyl)sulfonyl)methanide (in DMSO)
C7H5Cl2O2S *
DMSO

N  Param.: 26.90

sN Param.: 0.45
*** J. Org. Chem. 2017, 82, 2011-2017
10.1021/acs.joc.6b02844
chloro((4-cyanophenyl)sulfonyl)methanide (in DMSO)
C8H5ClNO2S *
DMSO

N  Param.: 25.59

sN Param.: 0.51
*** J. Org. Chem. 2017, 82, 2011-2017
10.1021/acs.joc.6b02844
chloro((4-nitrophenyl)sulfonyl)methanide (in DMSO)
C7H5ClNO4S *
DMSO

N  Param.: 24.88

sN Param.: 0.49
*** J. Org. Chem. 2017, 82, 2011-2017
10.1021/acs.joc.6b02844
chloro(phenylsulfonyl)methanide (in DMF)
C7H6ClO2S *
DMF

N  Param.: 26.64

sN Param.: 0.64
- Chem. Eur. J. 2008, 14, 6108-6118
10.1002/chem.200800329
chloro(phenylsulfonyl)methanide (in DMSO)
C7H6ClO2S *
DMSO

N  Param.: 28.27

sN Param.: 0.42
*** J. Org. Chem. 2017, 82, 2011-2017
10.1021/acs.joc.6b02844
chlorodimethylsilane
C2H7ClSi *
dichloromethane

N  Param.: 0.79

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
cis-HMn(PCy3)(CO)4
*
dichloromethane

N  Param.: 2.20

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
cis-HMn(PPh3)(CO)4
*
dichloromethane

N  Param.: 2.30

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
cis-HRe(PPh3)(CO)4
*
dichloromethane

N  Param.: 4.50

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
Cp2Ti(CH2Ph)2 - Dibenzyltitanocene
*
dichloromethane

N  Param.: 4.38

sN Param.: 1.00
* Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
Cp2Zr(CH2Ph)2 - Dibenzylzirconocene
*
dichloromethane

N  Param.: 5.10

sN Param.: 1.03
*** Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
Cp2Zr(Me)2 - Dimethylzirconocene
*
dichloromethane

N  Param.: 4.35

sN Param.: 1.09
*** Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
cumene peroxy anion (in H2O)
C9H11O2 *
water

N  Param.: 13.92

sN Param.: 0.61
*** Angew. Chem. Int. Ed. 2017, 56, 13279-13282
10.1002/anie.201707086
cyanamide anion (in DMSO)
*
DMSO

N  Param.: 20.33

sN Param.: 0.64
*** J. Org. Chem. 2010, 75, 5250-5258
10.1021/jo1009883
cyanate (in MeCN)
CNO- *
MeCN

N  Param.: 13.60

sN Param.: 0.84
*** Chem. Eur. J. 2008, 14, 3866-3868
10.1002/chem.200800314
cyanide (in MeCN)
CN- *
MeCN

N  Param.: 16.27

sN Param.: 0.70
*** Angew. Chem. Int. Ed. 2005, 44, 142-145
10.1002/anie.200461640
cyano((diphenylmethylene)amino)methanide
*
DMSO

N  Param.: 29.50

sN Param.: 0.50
* Tetrahedron 2019, 75, 459-463
10.1016/j.tet.2018.1[...]
cyano(pyridin-1-ium-1-yl)methanide (in DMSO)
C7H7N2 *
DMSO

N  Param.: 25.94

sN Param.: 0.42
*** J. Am. Chem. Soc. 2013, 135, 15216-15224
10.1021/ja407885h
cyanoborate ion (in water)
*
water

N  Param.: 9.99

sN Param.: 0.54
*** Org. Biomol. Chem. 2023, 21, 85-88
10.1039/D2OB02041F
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
cyclohepta-1,3-diene
C7H10 *
dichloromethane

N  Param.: 0.06

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
cycloheptatriene
C7H8 *
dichloromethane

N  Param.: 0.52

sN Param.: 0.97
* J. Am. Chem. Soc. 2002, 124, 4076-4083
10.1021/ja0121538
cycloheptatriene (in MeCN)
C7H8 *
MeCN

N  Param.: 0.55

sN Param.: 0.97
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
cyclohexa-1,3-diene
C6H8 *
dichloromethane

N  Param.: 0.67

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
cycloocta-1,3-diene
C8H12 *
dichloromethane

N  Param.: -0.50

sN Param.: 1.10
* 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
cyclopentene
C5H8 *
dichloromethane

N  Param.: -1.55

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
cysteine (dianionic, in water, S-nucleophile!)
C3H5NO2S *
water

N  Param.: 23.43

sN Param.: 0.42
*** Org. Biomol. Chem. 2007, 5, 3814-3820
10.1039/b713778h
DABCO (in MeCN)
C6H12N2 *
MeCN

N  Param.: 18.80

sN Param.: 0.70
*** Angew. Chem. Int. Ed. 2007, 46, 6176-6179
10.1002/anie.200701489
Danishefskys diene
C8H16O2Si *
dichloromethane

N  Param.: 8.57

sN Param.: 0.84
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
DBN (in CH2Cl2)
*
dichloromethane

N  Param.: 15.50

sN Param.: 0.76
*** ChemCatChem 2012, 4, 993-999
10.1002/cctc.201200143
DBN (in MeCN)
C7H12N2 *
MeCN

N  Param.: 16.28

sN Param.: 0.67
*** Chem. Commun. 2008, , 1792-1794
10.1039/b801811a
DBU (in MeCN)
C9H16N2 *
MeCN

N  Param.: 15.29

sN Param.: 0.70
*** Chem. Commun. 2008, , 1792-1794
10.1039/b801811a
DBU (in THF)
*
THF

N  Param.: 16.12

sN Param.: 0.67
*** Angew. Chem. Int. Ed. 2011, 50, 6915-6919
10.1002/anie.201102435
Desoxy Breslow intermediate 2a
*
THF

N  Param.: 17.12

sN Param.: 0.80
*** Angew. Chem. Int. Ed. 2012, 51, 6231-6235
10.1002/anie.201202327
Desoxy Breslow intermediate 2a
*
DMSO

N  Param.: 17.41

sN Param.: 0.74
*** Angew. Chem. Int. Ed. 2012, 51, 6231-6235
10.1002/anie.201202327
Desoxy Breslow intermediate 2a'
*
THF

N  Param.: 14.45

sN Param.: 0.71
*** Angew. Chem. Int. Ed. 2012, 51, 6231-6235
10.1002/anie.201202327
Desoxy Breslow intermediate 2b
*
THF

N  Param.: 13.91

sN Param.: 0.64
*** Angew. Chem. Int. Ed. 2012, 51, 6231-6235
10.1002/anie.201202327
Desoxy Breslow intermediate 2b'
*
THF

N  Param.: 11.42

sN Param.: 0.70
*** Angew. Chem. Int. Ed. 2012, 51, 6231-6235
10.1002/anie.201202327
Desoxy Breslow intermediate 2c'
*
THF

N  Param.: 12.75

sN Param.: 0.71
*** Angew. Chem. Int. Ed. 2012, 51, 6231-6235
10.1002/anie.201202327
Dexoxy Breslow intermediate 6
*
THF

N  Param.: 15.58

sN Param.: 0.57
*** Angew. Chem. Int. Ed. 2012, 51, 10408-10412
10.1002/anie.201204524
DHPB (in CH2Cl2)
C10H10N2S *
dichloromethane

N  Param.: 13.86

sN Param.: 0.78
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
di(methoxyethyl)amine (in MeCN)
*
MeCN

N  Param.: 13.24

sN Param.: 0.93
*** Eur. J. Org. Chem. 2009, , 6379-6385
10.1002/ejoc.200900925
diacetamide anion (in DMSO)
*
DMSO

N  Param.: 16.05

sN Param.: 0.70
*** J. Org. Chem. 2010, 75, 5250-5258
10.1021/jo1009883
diazoacetone
C3H4N2O *
dichloromethane

N  Param.: 3.96

sN Param.: 0.91
*** Chem. Eur. J. 2003, 9, 4068-4076
10.1002/chem.200304913
diazocyclopentadiene (in CH2Cl2)
C5H4N2 *
dichloromethane

N  Param.: 4.84

sN Param.: 1.06
*** Synthesis 2023, 55, 354-358
10.1055/s-0041-1737327
diazomethane
CH2N2 *
dichloromethane

N  Param.: 10.48

sN Param.: 0.78
*** Chem. Eur. J. 2003, 9, 4068-4076
10.1002/chem.200304913
dibutylsulfide (in CH2Cl2)
C8H18S *
dichloromethane

N  Param.: 11.86

sN Param.: 0.74
** Chem. Eur. J. 2021, 21, 11367-11376
10.1002/chem.202100977
dichloro(methyl)silane
*
dichloromethane

N  Param.: -3.20

sN Param.: 0.73
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
diethanolamine (in 91M9AN)
C4H11NO2 *
MeOH-MeCN mix

N  Param.: 13.71

sN Param.: 0.67
*** Angew. Chem. Int. Ed. 2006, 45, 3869-3874
10.1002/anie.200600542
diethanolamine (in DMSO)
*
DMSO

N  Param.: 15.51

sN Param.: 0.70
*** J. Am. Chem. Soc. 2009, 131, 11392-11401
10.1021/ja903207b
diethanolamine (in water)
C4H11NO2 *
water

N  Param.: 13.00

sN Param.: 0.61
*** J. Org. Chem. 2007, 72, 3679-3688
10.1021/jo062586z
diethyl diazomalonate
C7H10N2O4 *
dichloromethane

N  Param.: -0.35

sN Param.: 0.93
** Chem. Eur. J. 2003, 9, 4068-4076
10.1002/chem.200304913
diethyl(methyl)silane
C5H14Si *
dichloromethane

N  Param.: 3.40

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
diethylamine (in MeCN)
*
MeCN

N  Param.: 15.10

sN Param.: 0.73
*** Eur. J. Org. Chem. 2009, , 6379-6385
10.1002/ejoc.200900925
diethylamine (in water)
C4H11N *
water

N  Param.: 14.68

sN Param.: 0.53
*** J. Org. Chem. 2007, 72, 3679-3688
10.1021/jo062586z
diethylether (in dichloromethane)
*
dichloromethane

N  Param.: -5.10

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
diethylmercury (in MeCN)
*
MeCN

N  Param.: -0.70

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
dihexylsilane
*
dichloromethane

N  Param.: 2.27

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
Dimedone iodonium ylide (in CH2Cl2)
*
dichloromethane

N  Param.: 6.18

sN Param.: 0.81
*** J. Am. Chem. Soc. 2016, 138, 10304-10313
10.1021/jacs.6b05768
dimethoxymethane
*
dichloromethane

N  Param.: -4.90

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
Dimethyl 1,1'-isopropylidenezirconocene
*
dichloromethane

N  Param.: 5.20

sN Param.: 1.00
* Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
Dimethyl bis(indenyl)zirconium(IV)
*
dichloromethane

N  Param.: 6.89

sN Param.: 1.00
* Chem. Eur. J. 2016, 22, 11196-11200
10.1002/chem.201602452
dimethyl diazomalonate
C5H6N2O4 *
dichloromethane

N  Param.: -1.24

sN Param.: 0.81
*** J. Am. Chem. Soc. 2023, 145, 7416-7434
10.1021/jacs.2c13872
dimethyl((trimethylgermyl)methyl)silane
C6H18GeSi *
dichloromethane

N  Param.: 5.36

sN Param.: 0.62
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
dimethyl((trimethylstannyl)methyl)silane
C6H18SiSn *
dichloromethane

N  Param.: 6.53

sN Param.: 0.58
** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
dimethyl(neopentyl)silane
C7H18Si *
dichloromethane

N  Param.: 3.55

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
dimethyl(p-tolyl)silane
C9H14Si *
dichloromethane

N  Param.: 3.83

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
dimethyl(phenyl)silane
C8H12Si *
dichloromethane

N  Param.: 3.55

sN Param.: 0.75
*** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
dimethyl(propoxy)silane
C5H14OSi *
dichloromethane

N  Param.: 2.40

sN Param.: 0.75
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
dimethylamine (in MeCN)
*
MeCN

N  Param.: 17.96

sN Param.: 0.63
*** J. Org. Chem. 2012, 77, 8142-8155
10.1021/jo301497g
dimethylamine (in water)
C2H7N *
water

N  Param.: 17.12

sN Param.: 0.50
*** J. Org. Chem. 2007, 72, 3679-3688
10.1021/jo062586z
dimethylselenide (in CH2Cl2)
C2H6Se *
dichloromethane

N  Param.: 12.60

sN Param.: 0.72
- Chem. Eur. J. 2021, 21, 11367-11376
10.1002/chem.202100977