March 1997 SYNTHESIS 351 Synthesis of fi-Dimethylsulfonium- and If-Methylthio-Substituted Vinyl Triflates by Reaction of Aeetylenes with Dimethyl Sulfide Ditriflate Valentine G. Nenajdenko, Pavel V ... (3) Stang, PJ Chem. ... SYNTHESIS 355 (6) Hargrove, R.].; Stang, R]. J. Org. ...