Synthesis of ketones by hydrolysis of enol ethers
An enantioselective protonation reaction of silyl enol ethers of ketones in the presence of a cationic gold(I) disphosphine complex as chiral Brønsted acid and of alcoholic solvent gave optically active cyclic and acyclic ketones in excellent yields and high enantioselectivities.
C. H. Cheon, O. Kanno, F. D. Toste, J. Am. Chem. Soc., 2011, 133, 12875-12879.