Elemental-Sulfur-Incorporated Cyclizations of Pyrrolidines Leading to Thienopyrroles
作者:Yuanyuan Yue、Huibin Shao、Zhixian Wang、Ke Wang、Le Wang、Kelei Zhuo、Jianming Liu
DOI:10.1021/acs.joc.0c01363
日期:2020.9.4
2-b]pyrroles from the direct oxidative [4 + 1] cyclization of 2-alkynyl pyrrolidines with elemental sulfur. This transformation likely originates from electrophilic attack at the β-position of pyrrolidine followed by an intramolecular thienannulation to deliver the desired product. Mechanistic investigation suggests that the present reaction involves the formation of dihydrothieno[3,2-b]pyrrole as an
我们在本文中报道了2-炔基吡咯烷与元素硫的直接氧化[4 + 1]环化反应合成噻吩并[3,2- b ]吡咯。该转变可能源自吡咯烷在β-位的亲电攻击,随后是分子内的噻吩环化以递送所需的产物。机理研究表明,该反应涉及二氢噻吩并[3,2- b ]吡咯作为中间体的形成。