The study of intramolecular free radical cyclizations of α-sulfonyl and α-sulfinyl radicals
作者:Tsai Yeun-Min、Ke Bor-Wen、Lin Chao-Hsiung
DOI:10.1016/s0040-4039(00)98025-0
日期:1990.1
α-Sulfonyl and α-sulfinyl radicals can be generated from the corresponding α-halosulfones and αhalosulfoxides. Our results indicate that these radicalscyclize very efficiently.
A very rapid oxygen exchangereactionbetween a sulfoxide and dimethylsulfide took place with trifluoroacetic anhydride. A plausible mechanism involves the nucleophilic attack of a sulfide on a sulfonium sulfur atom. From these findings a convenient method for the reduction of a sulfoxide to a sulfide is described.