Metal-Free Synthesis of Benzothiazoles from Disulfides of 2-Aminobenzenethiol and Carboxylic Acid via PCl3-Promoted Tandem Reaction
作者:Ning Zhu、Guangyan Du、Limin Han、Hailong Hong、Quanling Suo
DOI:10.3987/com-15-13256
日期:——
A metal-free process for the synthesis of benzothiazoles via PCl3-promoted cleavage/acylation/cyclization of disulfides and carboxylic acids has been developed. In addition to acting as the acylating reagent which converted carboxylic acids into acyl chlorides, PCl3 also converted disulfides to thiols, which promoted disulfides of 2-aminobenzenethiol reacted with carboxylic acid to produce benzothiazoles. The developed method is applicable to a wide range of carboxylic acids containing different functional groups.