Dithio and Thiono Esters, 50. - α,β-Acetylenic Thioamides, Dithio Esters, and Thiono Esters
α,β-Acetylenic amides 5 and thioamides 7 have been obtained by a palladium-catalysed condensation of the terminal acetylenes 3 with N,N-dimethylcarbamoyl chloride (4) or -thiocarbamoyl chloride (6).Sulfhydrolysis of the α,β-acetylenic thioamidium salts 19
The α,β-acetylenic dithio and thiono esters 1 and 2 have been prepared by thiolysis of the iminium salts 7, by a palladium(II) catalyzed condensation of the acetylenes 3 with the thiocarbonyl chlorides 8 or 9, and by a thiocarbonylation of the magnesium a