Construction of 2-Arylbenzo[4,5]thieno[2,3-<i>d</i>]thiazole Skeleton via CuCl/S-Mediated Three-Component Reaction
作者:Wei Zhang、Shanqing Tao、Huaibin Ge、Qiao Li、Zhenkang Ai、Xiaoxian Li、Beibei Zhang、Fengxia Sun、Xiaqing Xu、Yunfei Du
DOI:10.1021/acs.orglett.9b04206
日期:2020.1.17
An exclusive thiophene-fused polycyclic π-conjugated 2-arylbenzo[4,5]thieno[2,3-d]thiazole skeleton was constructed via a one-pot CuCl-mediated three-component reaction, using 2-(2-bromophenyl)acetonitrile and aromatic aldehydes as substrates and elemental sulfur as sulfur source in the presence of K2CO3 and 1,10-phen in DMSO. A plausible reaction mechanism was proposed, which involved formation of
使用2-(2-溴苯基)通过一锅CuCl介导的三组分反应构建排他性噻吩稠合的多环π共轭2-芳基苯并[4,5]噻吩并[2,3-d]噻唑骨架在DMSO中存在K2CO3和1,10-phen的条件下,以乙腈和芳族醛为底物,以元素硫为硫源。提出了一种可能的反应机理,该机理涉及通过2-溴苯基乙腈和硫的环化形成苯并[b]噻吩-2-胺,然后进行分子内的缩合/与芳香族醛的脱氢反应。