gem-Dialkylthio vinylallenes: alkylthio-regulated reactivity and application in the divergent synthesis of pyrroles and thiophenes
作者:Zhongxue Fang、Haiyan Yuan、Ying Liu、Zixun Tong、Huiqin Li、Jin Yang、Badru-Deen Barry、Jianquan Liu、Peiqiu Liao、Jingping Zhang、Qun Liu、Xihe Bi
DOI:10.1039/c2cc33857b
日期:——
gem-Dialkylthio vinylallenes were obtained for the first time and applied to the divergent synthesis of fully-substituted pyrroles and thiophenes by domino cyclizations. These two cyclization pathways were regulated by alkylthio groups. Plausible reaction mechanisms were presented and supported by DFT calculations. An unprecedented metal-free carbothiolation was discovered in the formation of thiophenes
首次获得了gem-二烷硫基乙烯基丙二烯,并将其用于通过多米诺环化发散合成完全取代的吡咯和噻吩。这两个环化途径被硫基调控。合理的反应机理进行了介绍和通过DFT计算支持。在噻吩的形成中发现了前所未有的无金属碳硫键化反应。