Mayr's Database of Reactivity Parameters

Isochalkogenoureas

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
3,5,6,7-tetrahydro-2H-imidazo[2,1-b][1,3]thiazine
*
dichloromethane

N  Param.: 13.00

sN Param.: 0.83
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
2,3,5,6-tetrahydroimidazo[2,1-b]thiazole
*
dichloromethane

N  Param.: 12.98

sN Param.: 0.81
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
2,3-dihydrobenzo[d]imidazo[2,1-b]thiazole
*
dichloromethane

N  Param.: 13.42

sN Param.: 0.73
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
2,3,4,6,7,8-hexahydropyrimido[2,1-b][1,3]thiazine
*
dichloromethane

N  Param.: 14.10

sN Param.: 0.82
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
THTP (3,5,6,7-tetrahydro-2H-thiazolo[3,2-a]pyrimidine)
*
dichloromethane

N  Param.: 14.45

sN Param.: 0.78
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
HyperBTM (in CH2Cl2)
C19H20N2S *
dichloromethane

N  Param.: 14.96

sN Param.: 0.64
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
(R)-2-benzhydryl-3,4-dihydro-2H-benzo[4,5]thiazolo[3,2-a]pyrimidine
*
dichloromethane

N  Param.: 15.30

sN Param.: 0.55
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
(R)-2-isopropyl-3,4-dihydro-2H-benzo[4,5]thiazolo[3,2-a]pyrimidine
*
dichloromethane

N  Param.: 16.50

sN Param.: 0.48
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
(R)-2-(tert-butyl)-3,4-dihydro-2H-benzo[4,5]thiazolo[3,2-a]pyrimidine
*
dichloromethane

N  Param.: 12.95

sN Param.: 0.58
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
(F)2-HBTM (in CH2Cl2)
C16H12F2N2S *
dichloromethane

N  Param.: 10.83

sN Param.: 0.80
*** ARKIVOC 2024, (4), 202312093
10.24820/ark.5550190[...]
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
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
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