(3) Chloro sulfides have been hydrolyzed to aromatic aldehydes previ~ usly,~ but the yields were only moderate, except in sterically favorable cases, since the resulting thiophenol reacted with the chloro sulfide or aldehyde to form thioacetals as important by- product^.^,^(4) H. Gross and G. Matthey, Chem. Ber., 97, 2606 (1964); PG Gassman and