Copper-Catalyzed Tandem C-N
Bond Formation Reaction: Selective Synthesis of 2-(Trifluoromethyl)benzimidazoles
作者:Xing-Guo Zhang、Mu-Wang Chen、Ping Zhong、Mao-Lin Hu
DOI:10.1055/s-0028-1088160
日期:——
CuI/TMEDA-catalyzed cross-coupling reaction of N-(2-haloaryl)trifluoroacetimidoyl chlorides with primaryamines. The present double amination process tolerates the presence of Cl, Br, or I substituent at the 2-position of the phenyl group. copper - double amination - N-(2-haloaryl)trifluoroacet-imidoyl chlorides - primaryamines - benzimidazoles
Synthesis of N-Substituted 2-Fluoromethylbenzimidazoles via Bis(trifluoroacetoxy)iodobenzene-Mediated Intramolecular Cyclization of N,N′-Disubstituted Fluoroethanimidamides
作者:Yongming Wu、Jiangtao Zhu、Haibo Xie、Zixian Chen、Shan Li
DOI:10.1055/s-0029-1218377
日期:2009.12
A mild and efficient method for the synthesis of N-substituted 2-fluoromethylbenzimidazoles via [bis(trifluoroacetoxy)-iodo]benzene-mediated intramolecular cyclization of N,N'-disubstituted bromodifluoro (or trifluoro) ethanimidamides was described.
Organostannyl mediated synthesis of 1-alkyl and 1-sulfonyl-2-trifluoromethylbenzimidazole derivatives
作者:N. Narayanan、T.R. Balasubramanian
DOI:10.1016/0022-328x(92)83130-a
日期:1992.1
The synthesis and characteristics of a new series of 1-alkyl and 1-sulfonyl derivatives of 2-trifluoromethylbenzimidazole through an organostannyl intermediate is described.
Synthesis of 1,2-Disubstituted Benzimidazoles by a Cu-Catalyzed Cascade Aryl Amination/Condensation Process