“…Later, Levin and Shestov (23) proposed a more feasible mechanism for the reduction of phenyl sulfone at the dropping mercury electrode. Johnson (19) observed that the wave for methyl vinyl sulfone was pH independent and concluded that the double bond, not the sulfone group, was reducible. This corroborates the work of Smith and coworkers (SO), who found that 2,3-dihydrobenzothiophene 1-dioxide was not reducible.…”