TMSCl/Fe(NO<sub>3</sub>)<sub>3</sub>-Catalyzed Synthesis of 2-Arylbenzothiazoles and 2-Arylbenzimidazoles Under Ultrasonic Irradiation
作者:Yan-Qin Yuan、Sheng-Rong Guo
DOI:10.1080/00397911.2010.501470
日期:2011.7.15
Abstract A convenient one-pot cyclocondensation method for benzothiazole and benzimidazole syntheses is described. A set of benzothiazoles and benzimidazoles were readily prepared from aromatic ortho-diamines or ortho-aminothiophenol and aldehydes using chlorotrimethylsilane in dimethylformamide as promoter and water scavenger under ultrasonic irradiation in good yields (84–97%).