Patent ID: 6713435
Filing Date: 2004-03-30
Classification: B01J,C07D,C07F

Abstract:
A method for producing an optically active lactone compound by Baeyer-Villiger oxidation of a cyclic ketone compound with at least one kind of oxidants selected from the group consisting of hydrogen peroxide and urine-hydrogen peroxide adduct (UHP) using a cobalt(salen) complex having a cis-&bgr; structure expressed by the following formula (I) or (II) as a catalyst. in which X and Y independently denote H, a t-butyl group or an electron-withdrawing substituting group and W is a halogen element. in which X and Y independently denote H, a t-butyl group or an electron-withdrawing substituting group and Zâˆ’ is a monovalent anion.