Asymmetric alpha-Sulfonyl-and alpha-Phosphoryl-Oxylation of Ketones by a Chiral Hypervalent Iodine(III)

摘要

An enantioselective direct oxygenation of propiophenone derivatives mediated by a catalytic or stoichiometric amount of new chiral non-C2-symmetric iodoarenes(III) is reported. The reaction gives an easy entry to optically active alpha-sulfonyl- and alpha-phosphoryl oxyketones in respectable yields and enantioselectivities.