Stereospecific cyclodehydration of 1,4-sulfanylalcohols to thiolanes: mechanistic insights
作者:Jean-Jacques Filippi、Elisabet Duñach、Xavier Fernandez、Uwe J. Meierhenrich
DOI:10.1016/j.tet.2008.07.088
日期:2008.10
A series of thiolanes were prepared by cyclodehydration of sulfanylalcohols in the presence of catalytic amounts of p-toluenesulfonic acid or by using K10 clay. The sulfur heterocycles were synthesised in good to excellent yields using either a conventional Dean–Stark method or microwave irradiation under solvent-free conditions. The reaction could be performed regio- and stereoselectively and its