Mayr's Database of Reactivity Parameters

Carbocations

For reactivities of structurally related compounds go to: Electrophiles » C-Electrophiles
1 | 2 | 3 « Back Found 132 molecules, displaying page 1 of 3 Results per page 10|50|100|all
Name Solvent Reactivity
Parameters 		Classification Reference
(title or year)
(4-NMe2)3-tritylium ion (= Crystal violet)
*

E Param.: -11.26

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
p-AniCH=N+Me2 (in MeCN)
C10H14NO*
 MeCN

E Param.: -10.69

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
(S,E)-5-benzyl-1-((E)-3-(4-(dimethylamino)phenyl)allylidene)-2,2,3-trimethyl-4-oxoimidazolidin-1-ium
C24H30N3O*
 dichloromethane

E Param.: -10.60

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
pipN+=CH-CH-Ph
C14H18N+*

E Param.: -10.30

*Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
(4-NMe2)2-tritylium ion (= Malachite green)
*

E Param.: -10.29

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
bis(1,2-dimethylindol-3-yl)methylium ion
C21H21N2*

E Param.: -10.23

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
(lil)2CH+
C23H25N2*

E Param.: -10.04

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1,1,3-tris(4-(dimethylamino)phenyl)allylium ion
C27H32N3*

E Param.: -9.84

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
pyrN+=CH-CH-Ph
C13H16N+*

E Param.: -9.80

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
bis(julidin-9-yl)allylium ion
*

E Param.: -9.78

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
pTolCH=N+CH2 (in MeCN)
C10H14N*
 MeCN

E Param.: -9.64

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
PhCH=N+(CH2)5 (in MeCN)
C12H16N*
 MeCN

E Param.: -9.60

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
indolecarboxylate derived iminium ion
*
 dichloromethane

E Param.: -9.50

**Angew. Chem. Int. Ed. 2009, 48, 5034-5037
10.1002/anie.200900933
(jul)2CH+
C25H29N2*

E Param.: -9.45

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
PhCH=N+(CH2)4 (in MeCN)
C11H14N*
 MeCN

E Param.: -9.35

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
PhCH=N+Me2 (in MeCN)
C9H12N*
 MeCN

E Param.: -9.27

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
Me2N+=CH-CH-Ph
C11H14N+*

E Param.: -9.20

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
1,1-bis(4-dimethylaminophenyl)-3-phenylallylium ion
*

E Param.: -8.97

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(ind)2CH+
C19H21N2*

E Param.: -8.76

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
mor iminium
C13H16NO+*

E Param.: -8.60

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
(PhCH2)2N+=CH-CH-Ph
C23H22N+*

E Param.: -8.50

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
p-CF3-C6H4-CH=N+Me2 (in MeCN)
C10H11F3N*
 MeCN

E Param.: -8.34

***J. Am. Chem. Soc. 2013, 135, 6579-6587
10.1021/ja401106x
(thq)2CH+
C21H25N2*

E Param.: -8.22

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
Jorgensen/Hayashi-iminium ion
C29H34NOSi+*

E Param.: -8.20

***Angew. Chem. Int. Ed. 2008, 47, 8723-8726
10.1002/anie.200802889
(S,E)-5-benzyl-1-((E)-3-(4-methoxyphenyl)allylidene)-2,2,3-trimethyl-4-oxoimidazolidin-1-ium
C23H27N2O2*
 dichloromethane

E Param.: -8.00

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(4-NMe2)-tritylium ion
*

E Param.: -7.93

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
1-methyl-3-((julolidin-9-yl)methylene)-3H-indol-1-ium ion
C22H23N2*

E Param.: -7.79

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
(pyr)2CH+
C21H25N2*

E Param.: -7.69

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
MacMillan-iminium ion (spiro)
*
 MeCN

E Param.: -7.67

***Angew. Chem. Int. Ed. 2011, 50, 9953-9956
10.1002/anie.201103683
diarylallylium ion (4-NMe2)2
*

E Param.: -7.50

***J. Org. Chem. 2011, 76, 9391-9408
10.1021/jo201668w
MacMillan-iminium ion (1st generation)
C22H25N2O+*
 MeCN

E Param.: -7.37

***Angew. Chem. Int. Ed. 2011, 50, 9953-9956
10.1002/anie.201103683
(S,E)-5-((1H-indol-3-yl)methyl)-2,2,3-trimethyl-4-oxo-1-((E)-3-phenylallylidene)imidazolidin-1-ium
C24H26N3O*
 dichloromethane

E Param.: -7.30

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(S,E)-5-benzyl-2,2,3-trimethyl-4-oxo-1-((E)-3-(p-tolyl)allylidene)imidazolidin-1-ium
C23H27N2O*
 dichloromethane

E Param.: -7.20

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
N-methylacridinium ion
C14H12N*

E Param.: -7.15

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(dma)2CH+
C17H21N2*

E Param.: -7.02

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(S,E)-2,2,3-trimethyl-4-oxo-1-((E)-3-phenylallylidene)-5-(3,4,5-trimethoxybenzyl)imidazolidin-1-ium
C25H31N2O4*
 dichloromethane

E Param.: -7.00

**Angew. Chem. Int. Ed. 2013, 52, 7967-7971
10.1002/anie.201301864
bis(5-methoxy-1-methylindol-3-yl)methylium ion
C21H21N2O2*

E Param.: -6.90

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
dimethylmethyleneammonium ion
C3H8N*

E Param.: -6.69

*Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
2-phenyl-1,3-dithianylium ion
C10H11S2*

E Param.: -6.43

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
3-(4-(dimethylamino)benzylidene)-1-methyl-3H-indol-1-ium ion
C18H19N2*

E Param.: -6.26

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
(S,E)-5-benzyl-2,2,3-trimethyl-1-((E)-3-(3-nitrophenyl)allylidene)-4-oxoimidazolidin-1-ium
C22H24N3O3*
 dichloromethane

E Param.: -6.10

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(S,E)-2,2,3-trimethyl-4-oxo-5-((perfluorophenyl)methyl)-1-((E)-3-phenylallylidene)imidazolidin-1-ium
C22H20F5N2O*
 dichloromethane

E Param.: -6.00

**Angew. Chem. Int. Ed. 2013, 52, 7967-7971
10.1002/anie.201301864
(S,E)-5-benzyl-1-((E)-3-(4-cyanophenyl)allylidene)-2,2,3-trimethyl-4-oxoimidazolidin-1-ium
C23H24N3O*
 dichloromethane

E Param.: -6.00

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
bis(1-methylindol-3-yl)methylium ion
C19H17N2*

E Param.: -5.99

***J. Org. Chem. 2015, 80, 8643-8656
10.1021/acs.joc.5b01298
2-phenyl-1,3-dithiolan-2-ylium ion
C9H9S2*

E Param.: -5.91

***Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(S,E)-5-benzyl-2,2,3-trimethyl-1-((E)-3-(4-nitrophenyl)allylidene)-4-oxoimidazolidin-1-ium
C22H24N3O3*
 dichloromethane

E Param.: -5.90

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(2S,5S)-5-benzyl-3-methyl-4-oxo-1-(3-phenylallylidene)-2-((E)-styryl)imidazolidin-1-ium
C28H27N2O*
 dichloromethane

E Param.: -5.90

**Asian J. Org. Chem. 2014, 3, 550-555
10.1002/ajoc.201402009
(mpa)2CH+
C27H25N2*

E Param.: -5.89

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
Vilsmeier ion
C3H7ClN*

E Param.: -5.77

*Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
(mor)2CH+
C21H25N2O2*

E Param.: -5.53

*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y