The present invention provides a process for producing an optically active compound of cycloalkyl[b]benzofuran using a readily available optically active compound as a starting material by a reaction using a transition metal or the Mitsunobu reaction, or a combination thereof, followed by a cyclization reaction using a metal or an organometallic reagent.
The process can exclude the needs of complicated optical resolution steps as well as enzyme reactions that requires a large amount of solvent and long reaction time besides repeatability is hardly obtained, providing a very useful production process that can apply for not only laboratory preparation but also for industrial scale productions.
本发明提供了一种生产环烷基[b]
苯并呋喃的光学活性化合物的方法,该方法使用易得的光学活性化合物作为起始物质,通过使用过渡
金属或三宅信夫反应或两者的组合反应,然后使用
金属或有机
金属试剂进行环化反应。该方法可以避免复杂的光学分辨步骤以及需要大量溶剂和长时间反应的酶反应,而重复性也很难获得,提供了一种非常有用的生产工艺,不仅适用于实验室制备,还适用于工业规模生产。