1992 Fiscal Year Final Research Report Summary
Participation of di- and tri-cations in Friedel-Crafts reactions.
| Project/Area Number |
03453154
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Chemical pharmacy
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| Research Institution | University of Tokyo |
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Principal Investigator |
SHUDO Koichi Univ Tokyo Prof., 薬学部, 教授 (50012612)
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| Co-Investigator(Kenkyū-buntansha) |
OHWADA Tomo Univ. Tokyo Assist. Prof., 薬学部, 助手 (20177025)
ENDO Yasuyki Univ Tokyo Assoc. Prof., 薬学部, 助教授 (80126002)
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| Project Period (FY) |
1991 – 1992
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| Keywords | Friedel-Crafts reaction / Iminiumbenzenium ion / Carbenium ion / Super acid / Trifluoromethanesulfonic acid / Gattermannreaction / Gattermann-Koch reaction |
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| Research Abstract |
Researches on di-and tri- cationic species as electrophiles in the reaction of benzene were performed. Dications and Trications propoded in the work are:
1.Iminium-benzenium dications
2.Diphenylmethylcations bearing a protonated carboxylic acid.
3.Diprotonated nitrostyrenes and nitroethylenes.
4.N,N-Diprotonated cinnamaldimines.
5.O,O-diprotonated cinnamaldehydes.
6.Diprotonated cyanides
7.triprotonated nitroacetic acid and their esters.
8.Diprotonated ketones.
9.Protnated acyl cations.
These novel species can be prepared in a strong acid and readily react with benzene. These results generalized the participation of di- or tricationic species in electrophilic aromatic substitution of benzene.
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