Aryloxy and alkyloxypropanolamines - are obtained in 45 to 70% yields and with 80% of asymmetric induction, using TiCl4 induced nucleophilic addition of cyanotrimethylsilane onto chiral acetals derived from racemic 2,4-pentanediol. Therefore, optically pure 2,4-pentanediol will provide, after a purification, optically pure -.
芳氧基和alkyloxypropanolamines -在45〜70%的产率,并与不对称诱导的80%得到,使用的TiCl 4诱导的亲核加成cyanotrimethylsilane的到由外消旋-
2,4-戊二醇衍生的手性
缩醛。因此,光学纯的
2,4-戊二醇在纯化后将提供光学纯的- 。