Electroreduction of 1-methyl 5-nitroindole, 5-nitrobenzofurane, and 5-nitrobenzothiophene in acidic and basic hydroorganic media: Generation and trapping of iminoquinone-type intermediates and electrosynthesis of ring-substituted amino derivatives
作者:Luc Bouchard、Ian Marcotte、Jean Marc Chapuzet、Jean Lessard
DOI:10.1139/v03-149
日期:2003.10.1
Preparative electrolysis of 1-methyl-5-nitroindole ( 1b ,X=N CH 3), 5-nitrobenzofurane (1c ,X=O ), and 5- nitrobenzothiophene (1d ,X=S ) at Hg, inacidic hydromethanolic media, leads to the formation of the corresponding 4-substituted amino derivatives 5, which result from the 100% regioselective addition to iminoquinone-type intermediate 4 of methanol or of any other good nucleophile present in the