TRANSFORMATIONS OF 2-METHYLTHIACYCLOBUTANE IN THE PRESENCE OF ALUMINUM OXIDE

Article abstract of DOI:10.1007/BF00512956

The transformations of 2-methylthiacyclobutane at 150-350 deg C in the presence of γ-Al2O3 samples with different aprotic acidities were investigated.It was established that the sulfide undergoes isomerization via two pathways, viz., with ring expansion to a five-membered ring and with opening at one C-S bond to give an unsaturated thiol.An experimental confirmation of the consecutive formation of hydrogen sulfide from a one-ring sulfide through a step involving the formation of an unsaturated thiol was obtained for the first time.The transformations are realized asa result of both ionic and polymerization-depolymerization processes.