Insights into the reaction of trans-diarylethenes with thionyl chloride: A practical synthesis of chlorobenzo[b]thiophenes
The reactivity of a variety of trans-1,2-diarylethenes with thionyl chloride has been investigated. All the substrates could readily afford 3-chlorobenzo[b]thiophenes in moderate yields and a pair of threo- and erythro-1,2-dichloro-1,2-diarylethanes as th