Reaction of sulfene with <i>n,N</i>‐disubstituted α‐aminomethyleneketones vi. Synthesis of <i>n,n</i>‐disubstituted 4‐amino‐3,4‐dihydro‐6‐phenyl‐1,2‐oxathiin 2,2‐dioxides and of 4‐methylphenylamino‐3,4‐dihydro‐5,6‐polymethylen‐1,2‐oxathiin 2,2‐dioxides

Abstract

Abstract The title compounds were obtained by cycloaddition of sulfene to N,N ‐disubstituted 3‐amino‐1‐phenyl‐2‐propen‐1‐ones and to 2‐metbylphenylaminomethylenecycloalkanones, respectively. Steric and electronic aspects of these reactions, as well as the failure of cycloaddition in the case of N,N ‐disubstituted 4‐arnino‐3‐buten‐2‐ones, are also discussed.