Synthesis of Polysubstituted Thiophenes<i>via</i>Base-Induced [2+2+1] Cycloaddition Reaction of Alkynes and Elemental Sulfur
作者:Weibing Liu、Cui Chen、Hailing Liu
DOI:10.1002/adsc.201500422
日期:2015.12.14
A simple approach to polysubstituted thiophene derivatives is demonstrated. The synthesis is highlighted by the direct [2+2+1] cycloadditionreaction to construct carbon-sulfur and carbon-carbon bonds, without adding oxidizing, reducing and noble metal agents. All tested substrates provided their corresponding thiophene products in high isolated yields under the optimized conditions.