THE REACTION OF VINYL AZIDES WITH SULFOXONIUM YLIDS., SYNTHESIS OF N-VINYL TRIAZOLINES AND VINYL AZIRIDINES. ... Alfred Hassner,* Benjamin A. Belinka, Jr., Mark Haber and Paul Munger Department of Chemistry, State University of New York at Binghamton, NY 13901 ... Summary: Vinyl azides 1 react with dimethylsulfoxonium ylid 3 at the azide function to produce in high yield 1-vinyl-4,5-unsubstituted-g-1,2,3_triazolines