trimethylsilyl trifluoromethanesulfonate; 3 A molecular sieve in acetonitrile T=0°C; 0.25 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

trimethylsilyl trifluoromethanesulfonate; 4 A molecular sieve in diethyl ether T=0°C; 0.25 h; further thioglycoside; various benzene sulfenates; solvent, temperature and reaction time varied; Product distribution;