Km. Yadav et al., STEPWISE CONTROLLED REDUCTION OF ALPHA-OXOKETENE DITHIOACETALS WITH ZN ZNCL2-TMEDA IN ETHANOL/, Tetrahedron, 52(13), 1996, pp. 4679-4686
alpha-Oxoketene dithioacetals 1 are shown to undergo highly selective
conjugate reduction with Zn/ZnCl2-TMEDA in refluxing ethanol under con
trolled reaction conditions to afford beta-methylthiomethylene ketones
6, beta-methylthioketones 7 and the completely desulphurized alpha-me
thylketones 8 in sequential manner.