Mayr's Database of Reactivity Parameters

Nucleophiles

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
((4-methoxyphenyl)sulfonyl)(pyridin-4-yl)amide (Ph4P+) (in CH2Cl2)
C12H11N2O3S- *
dichloromethane

N  Param.: 19.63

sN Param.: 0.65
*** J. Am. Chem. Soc. 2025, 147, 5043-5050
10.1021/jacs.4c14825
pyridin-4-yl((trifluoromethyl)sulfonyl)amide (Ph4P+) (in MeCN)
C6H4F3N2O2S- *
MeCN

N  Param.: 16.38

sN Param.: 0.60
*** J. Am. Chem. Soc. 2025, 147, 5043-5050
10.1021/jacs.4c14825
((4-methoxyphenyl)sulfonyl)(pyridin-4-yl)amide (Ph4P+) (in MeCN)
C12H11N2O3S- *
MeCN

N  Param.: 17.28

sN Param.: 0.65
*** J. Am. Chem. Soc. 2025, 147, 5043-5050
10.1021/jacs.4c14825
pyridin-4-yl((4-(trifluoromethyl)phenyl)sulfonyl)amide (Ph4P+) (in MeCN)
C12H8F3N2O2S- *
MeCN

N  Param.: 19.51

sN Param.: 0.47
*** J. Org. Chem. 2025, 90, 2298-2306
10.1021/acs.joc.4c02668
pyridin-4-yl(tosyl)amide (Ph4P+) (in MeCN)
C12H11N2O2S- *
MeCN

N  Param.: 17.19

sN Param.: 0.64
*** J. Org. Chem. 2025, 90, 2298-2306
10.1021/acs.joc.4c02668
pyridin-4-yl((trifluoromethyl)sulfonyl)amide (Bu4P+) (in MeCN)
C6H4F3N2O2S- *
MeCN

N  Param.: 16.48

sN Param.: 0.60
*** J. Org. Chem. 2025, 90, 2298-2306
10.1021/acs.joc.4c02668
pyridin-4-yl((trifluoromethyl)sulfonyl)amide (Bu4N+) (in MeCN)
C6H4F3N2O2S- *
MeCN

N  Param.: 16.68

sN Param.: 0.59
*** J. Org. Chem. 2025, 90, 2298-2306
10.1021/acs.joc.4c02668
50% water/50% MeCN (v/v)
H2O *
water-MeCN mix

N  Param.: 5.05

sN Param.: 0.89
*** J. Am. Chem. Soc. 2004, 126, 5174-5181
10.1021/ja031828z
O-DHPB (in CH2Cl2)
C10H10N2O *
dichloromethane

N  Param.: 13.31

sN Param.: 0.69
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
O-HyperBTM (in CH2Cl2)
C19H20N2O *
dichloromethane

N  Param.: 13.01

sN Param.: 0.73
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Te-BTM (in CH2Cl2)
C15H12N2Te *
dichloromethane

N  Param.: 14.62

sN Param.: 0.66
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Se-DHPB (in CH2Cl2)
C10H10N2Se *
dichloromethane

N  Param.: 15.16

sN Param.: 0.66
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Se-tetramisole (Se-TM) (in CH2Cl2)
C11H12N2Se *
dichloromethane

N  Param.: 15.26

sN Param.: 0.60
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Se-BTM (in CH2Cl2)
C15H12N2Se *
dichloromethane

N  Param.: 14.27

sN Param.: 0.63
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Se-HBTM (in CH2Cl2)
C16H14N2Se *
dichloromethane

N  Param.: 14.42

sN Param.: 0.67
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Se-HyperBTM (in DCM)
C19H20N2Se *
dichloromethane

N  Param.: 16.11

sN Param.: 0.58
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Se-HyperBTM (in MeCN)
C19H20N2Se *
MeCN

N  Param.: 15.84

sN Param.: 0.57
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Se-HyperBTM (in THF)
C19H20N2Se *
THF

N  Param.: 14.19

sN Param.: 0.77
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
Te-DHPB (in CH2Cl2)
C10H10N2Te *
dichloromethane

N  Param.: 16.63

sN Param.: 0.65
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
tetramisole (TM) (in CH2Cl2)
C11H12N2S *
dichloromethane

N  Param.: 13.86

sN Param.: 0.68
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
BTM (in CH2Cl2)
C15H12N2S *
dichloromethane

N  Param.: 13.06

sN Param.: 0.73
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
7-F-BTM (in CH2Cl2)
C15H11FN2S *
dichloromethane

N  Param.: 13.46

sN Param.: 0.66
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
7-MeO-BTM (in CH2Cl2)
C16H14N2OS *
dichloromethane

N  Param.: 13.15

sN Param.: 0.75
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
(1-azidovinyl)benzene
C8H7N3 *
dichloromethane

N  Param.: 4.57

sN Param.: 0.94
*** 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)-4-methoxybenzene
C9H9N3O *
dichloromethane

N  Param.: 6.08

sN Param.: 0.99
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d
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
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
2-(1-azidovinyl)naphthalene
C12H9N3 *
dichloromethane

N  Param.: 5.39

sN Param.: 0.89
*** 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
DHPB (in CH2Cl2)
C10H10N2S *
dichloromethane

N  Param.: 13.86

sN Param.: 0.78
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
HBTM (in CH2Cl2)
C16H14N2S *
dichloromethane

N  Param.: 13.45

sN Param.: 0.72
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
Te-HyperBTM (in DCM)
C19H20N2Te *
dichloromethane

N  Param.: 16.63

sN Param.: 0.63
*** ChemistryEurope 2026, 4, e202500443
10.1002/ceur.202500443
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
5-methyl-2,3-dihydrofuran (in MeCN)
C5H8O *
MeCN

N  Param.: 7.65

sN Param.: 0.86
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
(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
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
(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
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
N-Boc-2,3-dihydro-1H-pyrrole (in MeCN)
C9H15NO2 *
MeCN

N  Param.: 6.82

sN Param.: 1.24
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
3,4-dimethoxy-2-(methoxymethyl)-3,4-dihydro-2H-pyran
C9H16O4 *
dichloromethane

N  Param.: 1.53

sN Param.: 1.38
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
2-(acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate
C12H16O7 *
dichloromethane

N  Param.: 1.72

sN Param.: 1.24
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-3,4-dihydro-2H-pyran
C27H28O4 *
dichloromethane

N  Param.: 1.89

sN Param.: 1.27
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
2-((TBDMSO-methyl)-3,4-bis(TBDMSO)-3,4-dihydro-2H-pyran
C24H52O4Si3 *
dichloromethane

N  Param.: 1.97

sN Param.: 1.20
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
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
3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-3,4-dihydro-2H-pyran
C27H28O4 *
dichloromethane

N  Param.: 1.75

sN Param.: 1.37
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-6-methylenetetrahydro-2H-pyran
C28H30O4 *
dichloromethane

N  Param.: 6.19

sN Param.: 0.79
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
8-(benzyloxy)-2,2-di-tert-butyl-4,4a,8,8a-tetrahydropyrano[3,2-d][1,3,2]dioxasiline
C21H32O4Si *
dichloromethane

N  Param.: 1.85

sN Param.: 1.28
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
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
3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-5-methylenetetrahydrofuran
C27H28O4 *
dichloromethane

N  Param.: 5.50

sN Param.: 0.76
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
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
8-(benzyloxy)-2-phenyl-4,4a,8,8a-tetrahydropyrano[3,2-d][1,3]dioxine
C20H20O4 *
dichloromethane

N  Param.: 1.94

sN Param.: 1.24
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
3,4-bis(benzyloxy)-2-methyl-3,4-dihydro-2H-pyran
 C20H22O3 *
dichloromethane

N  Param.: 2.04

sN Param.: 1.20
*** Angew. Chem. Int. Ed. 2026, 65, e24329
10.1002/anie.202524329
phosphaethynolate ion (in MeCN)
COP- *
MeCN

N  Param.: 19.02

sN Param.: 0.82
*** Chem. Sci. 2024, 15, 14406-14414
10.1039/D4SC03518F
8-MeO-HyperBTM
C20H22N2OS *
dichloromethane

N  Param.: 15.70

sN Param.: 0.63
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
7-MeO-HyperBTM (in CH2Cl2)
C20H22N2OS *
dichloromethane

N  Param.: 14.95

sN Param.: 2.67
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
7-MeS-HyperBTM (in CH2Cl2)
C20H22N2S2 *
dichloromethane

N  Param.: 14.62

sN Param.: 0.67
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
7,8,9-(MeO)3-HyperBTM
C22H26N2O3S *
dichloromethane

N  Param.: 14.62

sN Param.: 0.67
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
9-MeS-HyperBTM
C20H22N2S2 *
dichloromethane

N  Param.: 13.49

sN Param.: 0.78
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
9-Me-HyperBTM
C20H22N2S *
dichloromethane

N  Param.: 14.76

sN Param.: 0.67
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
7-PivO-HyperBTM
C24H28N2O2S *
dichloromethane

N  Param.: 14.49

sN Param.: 0.66
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
7-Ms-HyperBTM
C20H22N2O2S2 *
dichloromethane

N  Param.: 12.52

sN Param.: 0.75
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
HyperNTM
C23H22N2S *
dichloromethane

N  Param.: 14.47

sN Param.: 0.72
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
HyperPTM
C27H24N2S *
dichloromethane

N  Param.: 13.43

sN Param.: 0.79
*** ChemistryEurope 2026, 4, e202500434
10.1002/ceur.202500434
2-(1-azidovinyl)naphthalene (in Cyrene)
C12H9N3 *
Cyrene (TM)

N  Param.: 6.00

sN Param.: 0.90
*** Chem. Commun. 2026, 62, 5041-5045
10.1039/d6cc00190d