[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] 提供一种高效的生产光学活性的色兰氧化合物的方法,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] 生产光学活性的色兰氧化合物的方法包括使用光学活性
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,以高对映选择性和高
化学收率不对称氧化光学活性的色兰化合物。