Mayr's Database of Reactivity Parameters

C-Nucleophiles

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
(E)-13-(ethylthio)-6-styryl-6,12-diazadispiro[4.1.47.25]tridec-12-ene (in MeCN)
C21H28N2S *
MeCN

N  Param.: 7.79

sN Param.: 0.87
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
(E)-4-(ethylthio)-2,2,5,5-tetramethyl-1-(3-phenylprop-1-en-1-yl)-2,5-dihydro-1H-imidazole (in MeCN)
C18H26N2S *
MeCN

N  Param.: 9.64

sN Param.: 0.70
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
(E)-4-(ethylthio)-2,2,5,5-tetramethyl-1-(3-phenylbut-1-en-1-yl)-2,5-dihydro-1H-imidazole (in MeCN)
C19H28N2S *
MeCN

N  Param.: 7.92

sN Param.: 0.73
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
(E)-4-(benzylthio)-2,2,5,5-tetramethyl-1-styryl-2,5-dihydro-1H-imidazole (in MeCN)
C22H26N2S *
MeCN

N  Param.: 8.30

sN Param.: 0.84
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
diazocyclopentadiene (in CH2Cl2)
C5H4N2 *
dichloromethane

N  Param.: 4.84

sN Param.: 1.06
*** Synthesis 2023, 55, 354-358
10.1055/s-0041-1737327
(E)-2,2,3,5,5-pentamethyl-1-styrylimidazolidin-4-one (in MeCN)
C16H22N2O *
MeCN

N  Param.: 7.10

sN Param.: 0.82
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
(E)-2,2,3,5,5-pentamethyl-1-styrylimidazolidine-4-thione (in MeCN)
C16H22N2S *
MeCN

N  Param.: 6.49

sN Param.: 0.83
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
(E)-4-(ethylthio)-2,2,5,5-tetramethyl-1-styryl-2,5-dihydro-1H-imidazole (in CH2Cl2)
C17H24N2S *
dichloromethane

N  Param.: 8.13

sN Param.: 0.97
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
(E)-4-(benzylthio)-2,2,5,5-tetramethyl-1-styryl-2,5-dihydro-1H-imidazole (in CH2Cl2)
C22H26N2S *
dichloromethane

N  Param.: 7.99

sN Param.: 0.98
*** Chem. Eur. J. 2024, 30, e202302764
10.1002/chem.202302764
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
anion of nitroethane (in DMF)
C2H4NO2- *
DMF

N  Param.: 22.21

sN Param.: 0.48
*** Chem. Eur. J. 2008, 14, 6108-6118
10.1002/chem.200800329
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
1,3,5-trimethyl-2-methylene-1,2-dihydropyridine (in DMSO)
C9H13N *
DMSO

N  Param.: 21.16

sN Param.: 0.59
*** Eur. J. Org. Chem. 2024, 27, e202400373
10.1002/ejoc.202400373
1,3-dimethyl-2-methylene-1,2-dihydropyridine (in DMSO)
C8H11N *
DMSO

N  Param.: 19.91

sN Param.: 0.62
*** Eur. J. Org. Chem. 2024, 27, e202400373
10.1002/ejoc.202400373
1,3-dimethyl-2-methylene-1,2-dihydropyridine (in MeCN)
C8H11N *
MeCN

N  Param.: 19.69

sN Param.: 0.61
*** Eur. J. Org. Chem. 2024, 27, e202400373
10.1002/ejoc.202400373
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-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-(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
enolate of 3-isochromanone (in DMSO)
C9H7O2- *
DMSO

N  Param.: 25.39

sN Param.: 0.54
*** J. Org. Chem. 2024, 89, 6915-6928
10.1021/acs.joc.4c00277
enolate of 2-coumaranone (in DMSO)
C8H5O2- *
DMSO

N  Param.: 19.60

sN Param.: 0.75
*** J. Org. Chem. 2024, 89, 6915-6928
10.1021/acs.joc.4c00277
methyl diazoacetate
C3H4N2O2 *
dichloromethane

N  Param.: 4.68

sN Param.: 0.94
*** J. Am. Chem. Soc. 2023, 145, 7416-7434
10.1021/jacs.2c13872
dimethyl diazomalonate
C5H6N2O4 *
dichloromethane

N  Param.: -1.24

sN Param.: 0.81
*** J. Am. Chem. Soc. 2023, 145, 7416-7434
10.1021/jacs.2c13872
(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
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