Wet Silica-Supported Permanganate: A Mild and Inexpensive Reagent for Highly Enantiomeric Purity Conversion of α-Sulfinyl Oximes and α-Sulfinyl Hydrazones to α-Keto Sulfoxides

Wet silica-supported potassium permanganate was used as an inexpensive and efficient reagent for conversion of α-sulfinyl oximes 1 and α-sulfinyl hydrazones 2 to the corresponding α-keto sulfoxides (3) in high yields and high enantiomeric purity under solvent-free conditions