ORGANOSULPHUR COMPOUNDS - LXXI Diverse Reactivity of α-Carbanions Derived from α-Phosphoryl Dithioacetals and α-Phosphoryl Sulphides Towards α,β-Unsaturated Carbonyl Compounds. A General Synthesis of Conjugated Ketene Dithioacetals

Article abstract of DOI:10.1016/S0040-4020(01)89445-X

α-Lithio-α-phosphoryl dithioacetals 2 react with aldehydes and ketones to give conjugated ketene dithioacetals in moderate to good yields.Monitoring the reaction course by 31P NMR spectra revealed that the reaction with aldehydes involves a 1,2-addition f