Indirect electroreduction of nitrobenzenes ortho-substituted by ester, carbonate, amide or carbamate group

被引:13
作者
Jan, T [1 ]
Floner, D [1 ]
Moinet, C [1 ]
机构
[1] UNIV RENNES 1,LAB ELECTROCHIM & ORGANOMET,CNRS,URA 415,F-35042 RENNES,FRANCE
关键词
indirect electrolysis; ortho-substituted nitrobenzenes; N-acetylated o-aminophenol; benzimidazoles; titanium complex;
D O I
10.1016/S0013-4686(97)85483-7
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Indirect electrolysis of various nitrobenzenes ortho-substituted by ester (OCOR), carbonate (OCO2R), amide (NHCOR) or carbamate (NHCO2R) group in dichloromethane is performed with a titanium complex (C5H5)(2)Ti+ in 1N aqueous sulphuric acid. Nitro compounds are selectively reduced to amino derivatives. Rearrangement of anilines ortho-substituted by ester or carbonate group into N-acylated o-aminophenol takes place in situ. 2-Substituted benzimidazoles are prepared from N-acylated o-phenylenediamines by heating in boiling acetic acid. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:2073 / 2079
页数:7
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