Intramolecular Addition of Carbon-Centered Tinthioimidoyl Radicals to Carbon-Carbon Double Bonds. Synthesis of γ- and δ-Thiolactams

Article abstract of DOI:10.1021/jo00298a008

(Tri-n-butyltin)thioimidoyl radicals of type 6, which were efficiently generated by treatment of alk-3-enyl- and alk-4-enylisothiocyanates with tri-n-butyltin hydride and AIBN, underwent exo cyclization to give, after hydrolysis, the corresponding γ- or δ-thiolactams in good to excellent yields.