Radical reactions of epoxides. Chlorine-atom abstraction from .alpha.- and .beta.-chloro epoxides by the triphenyltin radical
摘要:
The four isomers of chloroepoxypropane have been prepared, and their relative reactivities with triphenyltin hydride have been determined. The three alpha-chloroepoxypropanes react at a much slower rate than does epichlorohydrin, the only beta-chloro epoxide of the four. The nature of the increased reactivity for the beta-chloro epoxides has been investigated by studying two pair of diastereomeric beta-chloro epoxides, and a single acyclic beta-chloro ether. The results are discussed in terms of the inductive, resonance, and stereoelectronic effects of the epoxide.