(S,E)-5-benzyl-2,2,3-trimethyl-1-((E)-3-(3-nitrophenyl)allylidene)-4-oxoimidazolidin-1-ium |
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 |
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 |
dichloromethane | E Param.: -6.00 |   | Asian J. Org. Chem. 2014, 3, 550-555 10.1002/ajoc.201402009 |
bis(1-methylindol-3-yl)methylium ion |
| E Param.: -5.99 |    | J. Org. Chem. 2015, 80, 8643-8656 10.1021/acs.joc.5b01298 |
2-phenyl-1,3-dithiolan-2-ylium ion |
| 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 |
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 |
dichloromethane | E Param.: -5.90 |   | Asian J. Org. Chem. 2014, 3, 550-555 10.1002/ajoc.201402009 |
(mpa)2CH+ |
| E Param.: -5.89 |      | J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
Vilsmeier ion |
| E Param.: -5.77 |  | Acc. Chem. Res. 2003, 36, 66-77 10.1021/ar020094c |
(mor)2CH+ |
| E Param.: -5.53 |      | J. Am. Chem. Soc. 2001, 123, 9500-9512 10.1021/ja010890y |
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 |    | 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 |