Mayr's Database of Reactivity Parameters

Nucleophiles

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
1,4-dihydronaphthalene
C10H10 *
dichloromethane

N  Param.: -0.07

sN Param.: 1.03
*** J. Am. Chem. Soc. 2002, 124, 4076-4083
10.1021/ja0121538
1,4-dihydronaphthalene (in MeCN)
C10H10 *
MeCN

N  Param.: -2.50

sN Param.: 1.00
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
1,4-dimethylcyclohexa-1,4-diene (in CH2Cl2)
C8H12 *
dichloromethane

N  Param.: 1.88

sN Param.: 0.96
** J. Am. Chem. Soc. 2014, 136, 13863-13873
10.1021/ja507598y
1,4-pentadiene
C5H8 *
dichloromethane

N  Param.: -2.99

sN Param.: 0.97
* J. Am. Chem. Soc. 2002, 124, 4076-4083
10.1021/ja0121538
1,6-bis(trimethylsilyl)hexane
*
dichloromethane

N  Param.: -4.70

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
1,6-dimethyl-2-methylene-1,2-dihydropyridine (in DMSO)
C8H11N *
DMSO

N  Param.: 20.76

sN Param.: 0.60
*** Eur. J. Org. Chem. 2024, 27, e202400373
10.1002/ejoc.202400373
1-((4-chlorobenzylidene)amino)-2-ethoxy-2-oxoethan-1-ide (in DMSO)
*
DMSO

N  Param.: 29.02

sN Param.: 0.49
** Tetrahedron 2019, 75, 459-463
10.1016/j.tet.2018.1[...]
1-((diphenylmethylene)amino)-2-ethoxy-2-oxoethan-1-ide (in DMSO)
*
DMSO

N  Param.: 26.95

sN Param.: 0.52
*** Tetrahedron 2019, 75, 459-463
10.1016/j.tet.2018.1[...]
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
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
1-(1-azidovinyl)-4-methoxybenzene
C9H9N3O *
dichloromethane

N  Param.: 6.08

sN Param.: 0.99
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
1-(1-azidovinyl)-4-methylbenzene
C9H9N3 *
dichloromethane

N  Param.: 5.47

sN Param.: 0.87
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
1-(1-azidovinyl)naphthalene
C12H9N3 *
dichloromethane

N  Param.: 3.17

sN Param.: 0.88
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
1-(1-cyclohexenyl)-4-methylpiperazine
C11H20N2 *
dichloromethane

N  Param.: 12.51

sN Param.: 0.80
* Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-(2-methyl-4,5-dihydro-1H-imidazol-1-yl)ethanone (in CH2Cl2)
C6H10N2O *
dichloromethane

N  Param.: 10.03

sN Param.: 0.75
*** Eur. J. Org. Chem. 2013, , 3369-3377
10.1002/ejoc.201300213
1-(3-chloropyridin-1-ium-1-yl)-2-oxo-2-phenylethan-1-ide (in DMSO)
C13H11ClNO *
DMSO

N  Param.: 17.98

sN Param.: 0.63
*** J. Am. Chem. Soc. 2013, 135, 15216-15224
10.1021/ja407885h
1-(4-(dimethylamino)pyridin-1-ium-1-yl)-2-oxo-2-phenylethan-1-ide (in DMSO)
C15H17N2O *
DMSO

N  Param.: 21.61

sN Param.: 0.58
*** J. Am. Chem. Soc. 2013, 135, 15216-15224
10.1021/ja407885h
1-(4-(tert-butyl)phenyl)-2-methylene-4,6-diphenyl-1,2-dihydropyridine (in DMSO)
C28H27N *
DMSO

N  Param.: 19.36

sN Param.: 0.68
*** Eur. J. Org. Chem. 2024, 27, e202400373
10.1002/ejoc.202400373
1-(benzylideneamino)-2-ethoxy-2-oxoethan-1-ide (in DMSO)
*
DMSO

N  Param.: 29.10

sN Param.: 0.50
* Tetrahedron 2019, 75, 459-463
10.1016/j.tet.2018.1[...]
1-(ethoxycarbonyl)-2-oxocyclododecan-1-ide (in DMSO)
C15H25O3 *
DMSO

N  Param.: 20.60

sN Param.: 0.63
*** Eur. J. Org. Chem. 2015, , 7594-7601
10.1002/ejoc.201501107
1-(ethoxycarbonyl)-2-oxocycloheptan-1-ide
C10H15O3 *
DMSO

N  Param.: 19.53

sN Param.: 0.83
*** Eur. J. Org. Chem. 2015, , 7594-7601
10.1002/ejoc.201501107
1-(ethoxycarbonyl)-2-oxocyclohexan-1-ide (in DMSO)
C9H13O3 *
DMSO

N  Param.: 18.32

sN Param.: 0.84
*** Eur. J. Org. Chem. 2015, , 7594-7601
10.1002/ejoc.201501107
1-(ethoxycarbonyl)-2-oxocyclooctan-1-ide (in DMSO)
C11H17O3 *
DMSO

N  Param.: 20.02

sN Param.: 0.76
*** Eur. J. Org. Chem. 2015, , 7594-7601
10.1002/ejoc.201501107
1-(ethoxycarbonyl)-2-oxocyclopentan-1-ide (in DMSO)
C8H11O3 *
DMSO

N  Param.: 18.63

sN Param.: 0.82
*** Eur. J. Org. Chem. 2015, , 7594-7601
10.1002/ejoc.201501107
1-(isoquinolin-2-ium-2-yl)-2-oxo-2-phenylethan-1-ide (in DMSO)
C17H14NO *
DMSO

N  Param.: 20.08

sN Param.: 0.57
*** J. Am. Chem. Soc. 2013, 135, 15216-15224
10.1021/ja407885h
1-(N-morpholino)cyclohexene
C10H17NO *
dichloromethane

N  Param.: 11.40

sN Param.: 0.83
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-(N-morpholino)cyclopentene
C9H15NO *
dichloromethane

N  Param.: 13.41

sN Param.: 0.82
*** Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-(N-piperidino)cyclohexene
C11H19N *
dichloromethane

N  Param.: 13.36

sN Param.: 0.81
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-(N-piperidino)cyclohexene (in MeCN)
*
MeCN

N  Param.: 14.02

sN Param.: 0.76
*** J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
1-(N-piperidino)cyclopentene
C10H17N *
dichloromethane

N  Param.: 15.06

sN Param.: 0.82
*** Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-(N-pyrrolidino)cyclohexene
C10H17N *
dichloromethane

N  Param.: 14.91

sN Param.: 0.86
*** Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-(N-pyrrolidino)cyclohexene (in MeCN)
*
MeCN

N  Param.: 16.42

sN Param.: 0.70
*** Angew. Chem. Int. Ed. 2010, 49, 9526-9529
10.1002/anie.201004344
1-(N-pyrrolidino)cyclopentene
C9H15N *
dichloromethane

N  Param.: 15.91

sN Param.: 0.86
*** Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-(p-tolyl)-1-(trimethylsilyl)ethene
C12H18Si *
dichloromethane

N  Param.: -0.65

sN Param.: 1.59
*** Chem. Eur. J. 2014, 20, 1103-1110
10.1002/chem.201303215
1-(perfluorophenyl)-1-(trimethylsiloxy)ethene
*
dichloromethane

N  Param.: 1.47

sN Param.: 0.89
*** Org. Lett. 2012, 14, 3990-3993
10.1021/ol301766w
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
1-(phenylmethylamino)cyclohexene
C13H17N *
dichloromethane

N  Param.: 10.73

sN Param.: 0.81
*** Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-(phenylmethylamino)cyclopentene
C12H15N *
dichloromethane

N  Param.: 12.90

sN Param.: 0.79
*** Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
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-(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
1-(trimethylsiloxy)cycloheptene
C10H20OSi *
dichloromethane

N  Param.: 6.62

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
1-(trimethylsiloxy)cyclohexene
C9H18OSi *
dichloromethane

N  Param.: 5.21

sN Param.: 1.00
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-(trimethylsiloxy)cyclooctene
C11H22OSi *
dichloromethane

N  Param.: 6.77

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
1-(trimethylsiloxy)cyclopentene
C8H16OSi *
dichloromethane

N  Param.: 6.57

sN Param.: 0.93
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-(trimethylsiloxy)cyclopentene (in MeCN)
C8H16OSi *
MeCN

N  Param.: 6.43

sN Param.: 0.89
*** Chem. Asian J. 2012, 7, 1401-1407
10.1002/asia.201101046
1-(trimethylsilyl)-imidazole (in MeCN)
*
MeCN

N  Param.: 11.43

sN Param.: 0.79
*** Org. Biomol. Chem. 2010, 8, 1929-1935
10.1039/c000965b
1-(triphenylsiloxy)cyclopentene
C23H22OSi *
dichloromethane

N  Param.: 5.76

sN Param.: 1.02
**** Eur. J. Org. Chem. 2005, , 1760-1764
10.1002/ejoc.200400706
1-(tris(pentafluorophenyl)siloxy)-cyclopentene
C23H7F15OSi *
dichloromethane

N  Param.: 1.38

sN Param.: 0.93
* Eur. J. Org. Chem. 2005, , 1760-1764
10.1002/ejoc.200400706
1-(tris(trimethylsilyl)siloxy)cyclohexene
*
dichloromethane

N  Param.: 5.07

sN Param.: 0.91
*** Org. Lett. 2010, 12, 5206-5209
10.1021/ol102220e
1-aminopropan-2-ol (in DMSO)
*
DMSO

N  Param.: 15.47

sN Param.: 0.65
*** J. Am. Chem. Soc. 2009, 131, 11392-11401
10.1021/ja903207b
1-benzyl-2-phenyl-4,5-dihydro-1H-imidazole (in CH2Cl2)
C16H16N2 *
dichloromethane

N  Param.: 13.11

sN Param.: 0.83
*** Eur. J. Org. Chem. 2013, , 3369-3377
10.1002/ejoc.201300213
1-butoxy-1-(t-butyl-dimethylsiloxy)ethene
C12H26O2Si *
dichloromethane

N  Param.: 10.32

sN Param.: 0.79
**** Eur. J. Org. Chem. 2004, , 2791-2796
10.1002/ejoc.200400134
1-butoxy-1-(trimethylsiloxy)ethene
C9H20O2Si *
dichloromethane

N  Param.: 10.21

sN Param.: 0.82
**** Eur. J. Org. Chem. 2004, , 2791-2796
10.1002/ejoc.200400134
1-ethinylcyclohexenyl-Co2(CO)6
*
dichloromethane

N  Param.: -0.44

sN Param.: 1.06
*** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-ethoxy-2-methyl-1,3-dioxobutan-2-ide (in DMSO)
C7H11O3 *
DMSO

N  Param.: 19.58

sN Param.: 0.73
*** Eur. J. Org. Chem. 2015, , 7594-7601
10.1002/ejoc.201501107
1-ethoxy-3-(4-nitrophenyl)-1,3-dioxopropan-2-ide (in DMSO)
C11H10NO5- *
DMSO

N  Param.: 16.26

sN Param.: 0.83
*** J. Am. Chem. Soc. 2018, 140, 11474-11486
10.1021/jacs.8b07147
1-hexene
C6H12 *
dichloromethane

N  Param.: -2.77

sN Param.: 1.41
***** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
1-mesityl-3-methyl-5-methylene-2,4,6-triphenyl-2,5-dihydropyridin-1-ium-2-ide (in THF)
C34H31N *
THF

N  Param.: 26.16

sN Param.: 0.52
*** Angew. Chem. Int. Ed. 2024, , e202318283
10.1002/anie.202318283
1-methoxy-2-methyl-1-(trimethylsiloxy)propene
C8H18O2Si *
dichloromethane

N  Param.: 9.00

sN Param.: 0.98
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-methoxy-2-methyl-1-(trimethylsiloxy)propene (in MeCN)
*
MeCN

N  Param.: 9.11

sN Param.: 0.88
*** J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
1-methyl uracil anion (in DMSO)
*
DMSO

N  Param.: 16.36

sN Param.: 0.69
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
1-methyl uracil anion (in water)
*
water

N  Param.: 8.54

sN Param.: 0.77
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
1-methyl-2,3,4,6,7,8-hexahydro-1H-pyrimido[1,2-a]pyrimidine (MeTBD)
C8H15N3 *
dichloromethane

N  Param.: 14.43

sN Param.: 0.81
*** ChemCatChem 2012, 4, 993-999
10.1002/cctc.201200143
1-methyl-2-methylene-3-phenyl-1,2-dihydropyridine (in DMSO)
C13H13N *
DMSO

N  Param.: 19.41

sN Param.: 0.61
*** Eur. J. Org. Chem. 2024, 27, e202400373
10.1002/ejoc.202400373
1-methyl-2-phenylpyrrolidine (in CH2Cl2)
C11H15N *
dichloromethane

N  Param.: 16.80

sN Param.: 0.49
*** J. Phys. Org. Chem. 2016, 29, 759-767
10.1002/poc.3580
1-methyl-2-phenylpyrrolidine (in MeCN)
C11H15N *
MeCN

N  Param.: 15.70

sN Param.: 0.54
*** J. Phys. Org. Chem. 2016, 29, 759-767
10.1002/poc.3580
1-methyl-4-(N-morpholino)tetrahydropyridine
C10H18N2O *
dichloromethane

N  Param.: 12.03

sN Param.: 0.80
* Chem. Eur. J. 2003, 9, 2209-2218
10.1002/chem.200204666
1-methyl-4-vinyl-benzene
C9H10 *
dichloromethane

N  Param.: 1.70

sN Param.: 1.06
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-methyl-benzimidazole (in MeCN)
*
MeCN

N  Param.: 10.37

sN Param.: 0.82
*** Org. Biomol. Chem. 2010, 8, 1929-1935
10.1039/c000965b
1-methyl-benzotriazole (in MeCN)
*
MeCN

N  Param.: 7.77

sN Param.: 0.76
* Org. Biomol. Chem. 2010, 8, 1929-1935
10.1039/c000965b
1-methyl-imidazole (in MeCN)
*
MeCN

N  Param.: 11.90

sN Param.: 0.73
*** Org. Biomol. Chem. 2010, 8, 1929-1935
10.1039/c000965b
1-methyl-imidazole (in water)
*
water

N  Param.: 9.91

sN Param.: 0.55
*** Org. Biomol. Chem. 2010, 8, 1929-1935
10.1039/c000965b
1-methylcyclohexene
C7H12 *
dichloromethane

N  Param.: 0.08

sN Param.: 1.15
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-methylcyclopentene
C6H10 *
dichloromethane

N  Param.: 1.18

sN Param.: 1.17
***** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
1-methylsiletane
C4H10Si *
dichloromethane

N  Param.: 2.30

sN Param.: 0.75
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
1-methylsilolane
C5H12Si *
dichloromethane

N  Param.: 2.20

sN Param.: 0.75
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
1-phenoxy-1-(trimethylsiloxy)ethene
C11H16O2Si *
dichloromethane

N  Param.: 8.23

sN Param.: 0.81
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-phenyl-1-(trimethylsiloxy)ethene
C11H16OSi *
dichloromethane

N  Param.: 6.22

sN Param.: 0.96
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-phenyl-imidazole (in MeCN)
*
MeCN

N  Param.: 11.31

sN Param.: 0.67
*** Org. Biomol. Chem. 2010, 8, 1929-1935
10.1039/c000965b
1-phenyl-N-(phenylmethyl)methanimine (in CH2Cl2)
C14H13N *
dichloromethane

N  Param.: 7.90

sN Param.: 0.76
** Z. Naturforsch. B 2013, 68b, 693-699
10.5560/ZNB.2013-3085
1-pyrrolidino-3,4-dihydronaphthalene (in MeCN)
C14H17N *
MeCN

N  Param.: 14.09

sN Param.: 0.66
*** Synthesis 2019, 51, 1157-1170
10.1055/s-0037-1611634
10% ethanol/90% MeCN (v/v)
C2H6O *
EtOH-MeCN mix

N  Param.: 5.19

sN Param.: 0.96
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
10% methanol/90% MeCN (v/v)
CH4O *
MeOH-MeCN mix

N  Param.: 5.55

sN Param.: 0.97
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
10% water/90% acetone (v/v)
H2O *
water-acetone mix

N  Param.: 5.70

sN Param.: 0.85
*** Angew. Chem. Int. Ed. 2004, 43, 2302-2305
10.1002/anie.200353468
10% water/90% HFIP (w/w)
*
water-HFIP mix

N  Param.: 0.96

sN Param.: 0.93
*** J. Phys. Org. Chem. 2013, 26, 59-63
10.1002/poc.3064
10% water/90% MeCN (v/v)
H2O *
water-MeCN mix

N  Param.: 4.56

sN Param.: 0.94
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
10% water/90%EtOH (v/v)
*
water-EtOH mix

N  Param.: 7.03

sN Param.: 0.86
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
10% water/90%TFE (v/v)
H2O *
water-TFE mix

N  Param.: 2.93

sN Param.: 0.88
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
10-methyl-9,10-dihydroacridine
*
dichloromethane

N  Param.: 5.54

sN Param.: 0.90
* 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
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
2% water/98% HFIP (w/w)
*
water-HFIP mix

N  Param.: -1.62

sN Param.: 1.10
*** J. Phys. Org. Chem. 2013, 26, 59-63
10.1002/poc.3064
2,2,2-trifluoroethanolate (in water)
C2H2F3O *
water

N  Param.: 12.66

sN Param.: 0.59
*** J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
2,2,2-trifluoroethylamine (in 91M9AN)
C2H4F3N *
MeOH-MeCN mix

N  Param.: 10.20

sN Param.: 0.92
*** Angew. Chem. Int. Ed. 2006, 45, 3869-3874
10.1002/anie.200600542
2,2,2-trifluoroethylamine (in DMSO)
C2H4F3N *
DMSO

N  Param.: 12.15

sN Param.: 0.65
*** J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
2,2,2-trifluoroethylamine (in MeCN)
*
MeCN

N  Param.: 10.13

sN Param.: 0.75
*** Eur. J. Org. Chem. 2009, , 6379-6385
10.1002/ejoc.200900925
2,2-dimethyl-5-(4-nitrobenzyl)-4,6-dioxo-1,3-dioxan-5-ide (in DMSO)
C13H12NO6 *
DMSO

N  Param.: 12.02

sN Param.: 1.17
*** Chem. Eur. J. 2014, 20, 11069-11077
10.1002/chem.201403161
2,2-dimethylpyrrolidine
C6H13N *
MeCN

N  Param.: 13.96

sN Param.: 0.76
*** J. Am. Chem. Soc. 2020, 142, 1526-1547
10.1021/jacs.9b11877
2,3,3-trimethyl-but-1-ene
C7H14 *
dichloromethane

N  Param.: 0.06

sN Param.: 1.07
***** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
2,3,4,6,7,8-hexahydro-1H-pyrimido[1,2-a]pyrimidine
C7H13N3 *
dichloromethane

N  Param.: 16.16

sN Param.: 0.75
*** ChemCatChem 2012, 4, 993-999
10.1002/cctc.201200143