[PROBLEMS] To provide an efficient process for producing an optically active chromene oxide compound which is an important intermediate for a benzopyran compound effective in the treatment of arrhythmia.
[MEANS FOR SOLVING PROBLEMS] The process for producing an optically active chromene oxide compound comprises using an optically active titanium complex represented by, e.g., the formula (1) or (2)
as a catalyst to asymmetrically oxidize an optically active chromene compound with high enantioselectivity in high chemical yield.
【问题】提供一种生产光学活性的环氧色素化合物的有效过程,该化合物是治疗心律失常的苯并
吡喃化合物的重要中间体。
【解决问题的方法】生产光学活性的环氧色素化合物的过程包括使用光学活性
钛配合物作为催化剂,例如使用公式(1)或(2)表示的光学活性
钛配合物,对光学活性的环氧色素化合物进行不对称氧化,高对映选择性地获得高
化学收率。