Reaction sequence arylsulfenyl chloride + alkoxyalkene-I + alkoxyalkene-II + allylmagnesium or boron derivatives as a new method for the controlled synthesis of polyfunctional derivatives

A new method is proposed for the controlled synthesis of polyfunctional compounds with formation of two new carbon-carbon bonds; the method is based on the following reaction sequence, which can be carried out in a single flask: addition of ArSCl to vinyl ether I, reaction of the resultant adduct with vinyl ether II in the presence of Lewis acid to form a cationic complex, and treatment of the latter with allyl derivatives of boron or magnesium.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1100–1107, May, 1991.