A catalyst-free and additive-free method for the synthesis of benzothiazolethiones from <i>o</i>-iodoanilines, DMSO and potassium sulfide
作者:Xiaoming Zhu、Wenguang Li、Xiai Luo、Guobo Deng、Yun Liang、Jianbing Liu
DOI:10.1039/c8gc00477c
日期:——
Under catalyst-free and additive-free conditions, a novel, convenient, environment-friendly method for the synthesis of benzothiazolethiones from o-iodoanilines, K2S and DMSO has been developed.
The gold standard: A gold‐catalyzed cascadereaction sequence for the preparation of polycyclicfusedindole cores exploits the ready availability and chemical flexibility of propargylic alcohols. The desired tri‐ or tetracyclic compounds are obtained in good yields with water as the only stoichiometric by‐product.