Mayr's Database of Reactivity Parameters

Nucleophiles

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
40% water/60%TFE (v/v)
H2O *
water-TFE mix

N  Param.: 3.42

sN Param.: 0.90
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
(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
HW(CO)3Cp*
*
dichloromethane

N  Param.: 3.50

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
HW(CO)3(indenyl)
*
dichloromethane

N  Param.: 3.50

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
HRe(CO)5
*
dichloromethane

N  Param.: 3.50

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
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
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(neopentyl)silane
C7H18Si *
dichloromethane

N  Param.: 3.55

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
50% water/50%TFE (v/v)
H2O *
water-TFE mix

N  Param.: 3.57

sN Param.: 0.89
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
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
triethylsilane
C6H16Si *
dichloromethane

N  Param.: 3.58

sN Param.: 0.70
*** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
tris((trimethylsilyl)methyl)silane
C12H34Si4 *
dichloromethane

N  Param.: 3.59

sN Param.: 0.67
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
2-methylfuran
C5H6O *
dichloromethane

N  Param.: 3.61

sN Param.: 1.11
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1,1,1,3,3,3-hexamethyl-2-(trimethylsilyl)trisilane
C9H28Si4 *
dichloromethane

N  Param.: 3.61

sN Param.: 0.79
*** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
2-(tributylstannyl)furan
C16H30OSn *
dichloromethane

N  Param.: 3.63

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

N  Param.: 3.67

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tris((butyldimethylsilyl)methyl)silane
C21H52Si4 *
dichloromethane

N  Param.: 3.73

sN Param.: 0.68
** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
n-butyl vinyl ether
*
dichloromethane

N  Param.: 3.76

sN Param.: 0.91
***** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
60% water/40%TFE (v/v)
H2O *
water-TFE mix

N  Param.: 3.77

sN Param.: 0.88
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
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
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
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
trihexylsilane
*
dichloromethane

N  Param.: 3.89

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
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
triphenylgermane
C18H16Ge *
dichloromethane

N  Param.: 3.99

sN Param.: 0.62
*** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
tributylsilane
C12H28Si *
dichloromethane

N  Param.: 3.99

sN Param.: 0.73
*** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
triethylgermane
C6H16Ge *
dichloromethane

N  Param.: 4.00

sN Param.: 0.75
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
10-methyl-9,10-dihydroacridine (in MeCN)
C14H13N *
MeCN

N  Param.: 4.00

sN Param.: 0.70
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
(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-methoxyphenyl)dimethylsilane
C9H14OSi *
dichloromethane

N  Param.: 4.23

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
(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
1,2,4,5-tetramethylcyclohexa-1,4-diene (in CH2Cl2)
C10H16 *
dichloromethane

N  Param.: 4.27

sN Param.: 0.86
** J. Am. Chem. Soc. 2014, 136, 13863-13873
10.1021/ja507598y
HMo(CO)3Cp*
*
dichloromethane

N  Param.: 4.30

sN Param.: 0.77
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
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