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Abstract
Carbonyl compounds have been converted into 1,3-oxathiolanes or 1,3-oxathianes and then reduced with “mixed hydride” to β-hydroxyethyl (or on further reduction ethyl) or γ-hydroxypropyl sulfides, respectively.1 However, this overall conversion of a carbonyl compound to a sulfide (a process for which the name reductive sulfidation is suggested)2 is limited by the difficulties in transforming carbonyl compounds into acyclic monothioketals and acetals.3 A solution to this problem has been found and is illustrated in equation (1).