A novel method for metal‐free oxothiolation of ynamides to construct oxazolidine‐2,4‐diones bearing sulfur‐substituted quaternary carbon atoms has been developed. It represents a rare C−O bond cleavage of ynamides, as well as a facile and tandem approach for the formation of C−O, C−S, and C−Cl bonds. This redox‐neutral protocol can be applied to the synthesis of multisubstituted oxazolidine‐2,4‐diones
开发了一种新型的无
金属羰基硫代酰胺化方法,以构建带有
硫取代的季碳原子的
恶唑烷-2,4-二酮。它代表了罕见的炔酰胺的C-O键断裂,以及形成C-O,C-S和C-Cl键的便捷串联方法。该氧化还原中性方案可用于在温和条件下以良好的
化学选择性和分离产物的高产率合成多取代的
恶唑烷-2,4-二酮。