Induced Alkene Reactions with Sulfur Dichloride. System Sulfur Dichloride-Dimethyl Sulfide as a Reagent for Polysulfonation and Conjugate Chlorination of Alkenes

Abstract

In reaction of unsaturated compounds with sulfur dichloride in the presence of dimethyl sulfide radically new induced directions are realized: the reagent is involved as dimer or trimer (formation of di- and trisulfides). Alongside this process a conjugate chlorination occurred with participation of external nucleophiles, dimethyl sulfide and acetonitrile, furnishing sulfonium chlorides and N-substituted acetamides respectively. The relative importance of these alternative reactions depends on solvent, alkene structure, and order of reagents addition.