Benzyltriphenylphosphonium peroxodisulfate (PhCH2PPh3)(2)S2O8: A mild and inexpensive reagent for highly enantiomeric purity of alpha-sulfinyl oximes and alpha-sulfinyl hydrazones to the corresponding beta-keto sulfoxides

摘要

Benzyltriphenylphosphonium peroxodisulfate (PhCH2PPh3)zS(2)O(8) (1) is readily prepared as an white solid from benzyltriphenylphosphonium chloride, performs conversion of alpha-sulfinyl oximes (2) and alpha-sulfinyl hydrazones (4) to the corresponding beta-keto sulfoxides (3) in high yields and high enantiomeric purity. [References: 6]