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-β 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 Z- is a monovalent anion. The optically active lactone compounds can be used for the synthesis of medicines and argochemicals.
                            一种利用具有下式(I)或(II)表示的顺式-β结构的
钴(salen)络合物作为催化剂,通过环酮化合物与至少一种选自
过氧化氢和尿-
过氧化氢加合物(UHP)组成的组的氧化剂进行拜耳-维里格氧化反应生产光学活性内酯化合物的方法。
 其中 X 和 Y 分别表示 H、叔丁基或抽电子取代基,W 为卤素元素。
 其中 X 和 Y 分别表示 H、叔丁基或抽电子取代基,Z- 是一价阴离子。光学活性内酯化合物可用于合成药物和芳香
化学品。