Thiocarbonyl-containing compounds undergo reactions with C1-Lewis base enolates to give sulfur heterocycles. Specifically, dimethylaminopyridine (DMAP) catalyses the cyclisation of dithioesters, trithiocarbonates and xanthates to give an array of sulfur heterocycles. The transformation demonstrates the viability of thiocarbonyl-containing functionality in Lewis base organocatalysis, and defines a new
含
硫代羰基化合物与 C1-Lewis 碱烯醇化物反应生成
硫杂环。具体来说,二甲
氨基吡啶 (
DMAP) 催化二
硫代酯、
三硫代碳酸酯和黄原酸酯的环化,生成一系列
硫杂环。该转化证明了含
硫代羰基官能团在路易斯碱有机催化中的可行性,并定义了
硫杂环的新方法。