Dimethyl sulfone (I) was monometalated by ethylmagnesium bromide, methylmagnesium iodide and n-butyllithium; the resulting organometallic compounds were added to benzaldehyde and benzophenone. With the intermediate methanesulfonylmethylmagnesium bromide (11), superior yields were obtained using anisole rather than benzene as the solvent. Tetrahydrothiophene-1, l-dioxide was ...
