2-Acylthienopyridines and related heterocycles are readily prepared in moderate to good yields under mild conditions by a nucleophilic thiolation, copper-catalyzed cyclization, and an oxidation cascade process using potassium xanthate as the thiol source. Moreover, excellent chemoselectivity, broad substrate scope, and good functional group tolerance are prominent features of this transformation.
通过温和的条件下的亲核巯基化,
铜催化的环化反应以及使用黄原酸
钾作为
硫醇源的氧化级联过程,可以轻松地以中等至良好的收率制备2-酰基
噻吩并
吡啶和相关的杂环。此外,出色的
化学选择性,广泛的底物范围和良好的官能团耐受性是该转化的突出特征。