Chemistry of acetylenic ethers 73: Alkali amide cleavage of allenyl thioethers

Abstract

Abstract Allenyl thioethers of the type CH 3 CHC (R = alkyl) have been converted in very good yield into 1,3‐enynes HCC‐CHCH‐R (IV) on treatment with two equivalents of alkali amide in liquid ammonia, followed by hydrolysis of the reaction mixture.