Electrochemical Selective Oxidative Synthesis of Diversified Sulfur Heterocycles from β‐Ketothioamides

Main observation and conclusionA general and practical protocol for the construction of diversified sulfur heterocycles has been described through organic electrosynthesis means. In undivided cell, dihydrothiophenes, thiazolines and 1,4-dithiines could be easily generated from various available beta-ketothioamides under metal-free and external oxidant-free conditions. The transformation underwent smoothly under mild conditions and could be easily scaled-up. Moreover, different sulfur heterocycles were generated through varying solvent and 1,4-diazabicyclo[2.2.2]octane (DABCO) could enable the hydrogen atom transfer (HAT) process of this transformation.