Synthesis of Furfural Sulfides and 4‐Alkylthiopyridines <i>via</i> Heterocyclization of α‐Acyl Ketene Dithioacetals
作者:Xiaoxuan Zhang、Jian Chang、Chong Chen、Qianqian Zhai、Shengnan Li、Xiaoning Song
DOI:10.1002/adsc.202300574
日期:2023.11.7
Herein, we devised a synthetic approach for skeletally diversified furfuryl sulfides and 4-alkylthiopyridines involving the heterocyclization of flexible α-acyl ketene dithioacetals, enabled by cooperative Pd/Cu catalysis. The overall transformation was initiated by acyl-directed desulfurative Sonogashira coupling, which was proposed as the key step in surmounting the competitive carbothiolation pathway