Syntheses and rearrangements of ketene mercaptals derived from some active methylene compounds and carbon disulphide
作者:L. Dalgaard、H. Kolind-Andersen、S.-O. Lawesson
DOI:10.1016/0040-4020(73)80147-4
日期:1973.1
ketene mercaptals. Ketene methyl allyl mercaptals derivedfrom diethyl malonate or methyl cyanoacetate rearranged at room temp to dithioesters by S → C allyl migration. The corresponding methyl crotyl derivatives gave equilibrium mixtures of the ketene mercaptals and the dithioesters, each of which were shown to undergo S → C and C → S rearrangements, respectively, with inversion of the crotyl group