An efficient strategy for the synthesis of 3-arylthiobenzo[b]thiophenes via a photodriven radical cyclization of 2-alkynylthioanisoles with disulfide was developed. The reaction proceeded smoothly under visible-light irradiation without any external photocatalyst and generated the desired products in high yields with good functional group tolerance.
开发了一种通过 2-炔基苯
硫基
苯甲醚与二
硫化物光驱动自由基环化合成 3-芳基
硫代苯并[ b ]
噻吩的有效策略。该反应在可见光照射下顺利进行,无需任何外部光催化剂,并以高产率生成具有良好官能团耐受性的所需产物。