Carbocations
| Name | Solvent |
Reactivity Parameters |
Classification |
Reference (title or year) |
|---|---|---|---|---|
MacMillan-iminium ion (2nd generation)   |
MeCN | E Param.: -5.52 |
 |
Angew. Chem. Int. Ed. 2011, 50, 9953-9956 10.1002/anie.201103683 |
methyl(phenyl)methyleneammonium ion  |
E Param.: -5.17 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
(E)-2-methyl-3-(4-methylbenzylidene)-3H-indol-1-ium ion  |
E Param.: -5.15 |
|
J. Org. Chem. 2015, 80, 8643-8656 10.1021/acs.joc.5b01298 |
|
(E)-2-(tert-butyl)-3-(4-methylbenzylidene)-3H-indol-1-ium  |
dichloromethane | E Param.: -5.06 |
|
Eur. J. Org. Chem. 2016, , 4050-4058 10.1002/ejoc.201600572 |
(E)-1,2-dimethyl-3-(4-methylbenzylidene)-3H-indol-1-ium ion  |
E Param.: -5.05 |
|
J. Org. Chem. 2015, 80, 8643-8656 10.1021/acs.joc.5b01298 |
|
(E)-3-benzylidene-1,2-dimethyl-3H-indol-1-ium ion  |
E Param.: -4.96 |
|
J. Org. Chem. 2015, 80, 8643-8656 10.1021/acs.joc.5b01298 |
|
2-(4-methoxyphenyl)chromenylium ion  |
E Param.: -4.95, Deviation: ±0.06 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
(dpa)2CH+  |
E Param.: -4.72 |
|
J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
|
9-(4-(dimethylamino)phenyl)-9H-fluoren-9-ylium  |
dichloromethane | E Param.: -4.51 |
|
Chem. Eur. J. 2017, 23, 623-630 10.1002/chem.201603963 |
(4-MeO)3-tritylium ion  |
E Param.: -4.35 |
 |
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
(mfa)2CH+  |
E Param.: -3.85 |
|
J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
|
tropylium ion  |
E Param.: -3.72, Deviation: ±0.03 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
flavylium ion  |
E Param.: -3.45, Deviation: ±0.16 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
(pfa)2CH+  |
E Param.: -3.14 |
|
J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
|
(4-MeO)2-tritylium ion  |
E Param.: -3.04 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
3-(4-methoxybenzylidene)-1-methyl-3H-indol-1-ium iom  |
E Param.: -3.02 |
|
J. Org. Chem. 2015, 80, 8643-8656 10.1021/acs.joc.5b01298 |
|
Me2C=C=N(+)Me2  |
E Param.: -2.80 |
|
Synthesis 2025, 57, 3251-3262 10.1055/a-2649-1999 |
|
1,1-dianisyl-3-phenylallylium ion  |
E Param.: -2.67, Deviation: ±0.30 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
1-methyl-3-(4-methylbenzylidene)-3H-indol-1-ium ion  |
E Param.: -2.19 |
|
J. Org. Chem. 2015, 80, 8643-8656 10.1021/acs.joc.5b01298 |
|
1,3-dithianylium ion  |
E Param.: -2.14, Deviation: ±0.07 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
(4-MeO,4-Me)-tritylium ion  |
E Param.: -2.13 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
Ph2C=C=N(+)Me2  |
E Param.: -1.90 |
|
Synthesis 2025, 57, 3251-3262 10.1055/a-2649-1999 |
|
(4-OMe,3-Me)-tritylium ion  |
E Param.: -1.84 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
3-benzylidene-1-methyl-3H-indol-1-ium ion  |
E Param.: -1.80 |
|
J. Org. Chem. 2015, 80, 8643-8656 10.1021/acs.joc.5b01298 |
|
(4-MeO,3-OMe)-tritylium ion  |
E Param.: -1.62 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
(4-MeO)-tritylium ion  |
E Param.: -1.59 |
|
Eur. J. Org. Chem. 2011, , 6470-6475 10.1002/ejoc.201100910 |
|
di-p-anisyl-allylium ion  |
E Param.: -1.45 |
|
J. Org. Chem. 2011, 76, 9391-9408 10.1021/jo201668w |
|
(fur)2CH+  |
E Param.: -1.36 |
|
J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
|
(4-Me)3-tritylium ion  |
E Param.: -1.21 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
(fur)(ani)CH+  |
E Param.: -0.81 |
|
J. Am. Chem. Soc. 2012, 134, 13902-13911 10.1021/ja306522b |
|
(4-Me)2-tritylium ion  |
E Param.: -0.70 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
dibenzo[a,d]tropylium ion  |
dichloromethane | E Param.: -0.63 |
|
Liebigs Ann. 1995, , 2005-2009 10.1002/jlac.1995199[...] |
(4-Me)-tritylium ion  |
E Param.: -0.13 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
(ani)2CH+  |
E Param.: 0.00 |
|
J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
|
(4-F)3-tritylium ion  |
E Param.: 0.05 |
|
Eur. J. Org. Chem. 2011, , 6470-6475 10.1002/ejoc.201100910 |
|
methoxy-(4-methoxyphenyl)methylium ion  |
E Param.: 0.14, Deviation: ±0.01 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
(4-F)2-tritylium ion  |
E Param.: 0.17 |
|
Eur. J. Org. Chem. 2011, , 6470-6475 10.1002/ejoc.201100910 |
|
(4-F)-tritylium ion  |
E Param.: 0.35 |
|
Eur. J. Org. Chem. 2011, , 6470-6475 10.1002/ejoc.201100910 |
|
tritylium ion (Ph3C+)  |
E Param.: 0.51 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
ani(pop)CH+  |
E Param.: 0.61 |
|
J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
|
9-(4-methoxyphenyl)-9H-fluoren-9-ylium  |
dichloromethane | E Param.: 0.85 |
|
Chem. Eur. J. 2017, 23, 623-630 10.1002/chem.201603963 |
1,1,3-triphenylallylium ion  |
E Param.: 0.98, Deviation: ±0.20 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
|
(3-F)-tritylium ion  |
E Param.: 1.01 |
|
Eur. J. Org. Chem. 2011, , 6470-6475 10.1002/ejoc.201100910 |
|
(3-Cl)-tritylium ion  |
E Param.: 1.06 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
(3-CF3)-tritylium ion  |
E Param.: 1.18 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
di-p-tolyl-allylium ion  |
E Param.: 1.23 |
|
J. Org. Chem. 2011, 76, 9391-9408 10.1021/jo201668w |
|
(4-CF3)-tritylium ion  |
E Param.: 1.33 |
|
J. Am. Chem. Soc. 2003, 125, 286-295 10.1021/ja021010y |
|
ani(tol)CH+  |
E Param.: 1.48 |
|
J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
|
(3-F)2-tritylium ion  |
E Param.: 1.54 |
|
Eur. J. Org. Chem. 2011, , 6470-6475 10.1002/ejoc.201100910 |
|
methoxy-(4-methylphenyl)methylium ion  |
E Param.: 1.90, Deviation: ±0.22 |
|
Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |