Catalytic asymmetric oxidation of alkyl aryl sulfides mediated by a series of chiral N-alkyl-1,2-diphenylaminoethanol/titanium/water complexes

摘要

A series of chiral N-alkyl-1,2-diphenylaminoethanol/titanium/water complexes were investigated as potential efficient catalyst for the enantioselective oxidation of alkyl aryl sulfides. The structure of the aminoethanols strongly influenced on the reactivity and enantioselectivity. Using(1S,2S)-N-methyl-1,2-diphenylaminoethanol (6) as ligand in oxidation of methyl phenyl sulfide, gave (S)-sulfoxide with moderate yield and ee.