Copper-Catalyzed Domino Reactions for the Synthesis of Phenothiazines
作者:Manna Huang、Dongting Huang、Xinhai Zhu、Yiqian Wan
DOI:10.1002/ejoc.201500667
日期:2015.8
A method for the one-pot synthesis of phenothiazines from benzothiazoles and aryl ortho-dihalides was explored. Preliminary work on the mechanism of the reaction suggested that it follows a domino process, including the hydrolysis of benzothiazoles followed by C–S coupling and C–N coupling. The low loading of the catalyst system (5 mol-% for both copper and ligand), the mild experimental conditions