A novel one-pot synthesis of 1H,3H-thiazolo[3,4-a]benzimidazoles has been developed by the reaction between o-phenylenediamine, 2-mercaptocarboxylic acid and a variety of carbonyl compounds in refluxing benzene.
One-pot synthesis of 1-aryl-1<i>H</i>,3<i>H</i>-thiazolo[3,4-<i>a</i>]benzimidazoles using magnetite-linked sulfonic acid as catalyst
作者:Liqiang Wu、Xiao Wang
DOI:10.1080/10426507.2014.906421
日期:2014.12.2
Abstract A series of 1-aryl-1H,3H-thiazolo[3,4-a]benzimidazole derivatives have been synthesized via the three-component reaction of o-phenylenediamine, aromatic aldehydes, and 2-mercaptoacetic acid, catalyzed by magnetite-linked sulfonic acid. This method has the advantages of high yield, extensive adaptability, easy operation, and environmental friendliness. Supporting this acid catalyst on magnetite