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    • 5. 发明授权
    • Optically active compound and method for producing same
    • 光学活性化合物及其制备方法
    • US06326520B1
    • 2001-12-04
    • US09377688
    • 1999-08-20
    • Akihiro IshiiKoichi Mikami
    • Akihiro IshiiKoichi Mikami
    • C07C49213
    • C07F7/1892B01J31/223B01J2231/341B01J2531/0266B01J2531/46C07C43/1787C07C45/30C07C49/82
    • The invention relates to a method for producing a novel optically active compound represented by the general formula [IV]. This method includes the step of reacting a vinyl ether with a halogenated acetaldehyde in the presence of an optically active binaphthol-titanium complex. With this, the novel optically active compound can be produced very easily. Furthermore, the novel optically active compound can easily be oxidized to a novel optically active &agr;,&bgr;-dihydrexyketone represented by the general formula [V]. These novel optically active compounds can each be used as useful intermediates. where R is a lower alkyl group or —Si(R3)3, where R3 is a lower alkyl group and three of R3 may be the same or different groups, R1 is a lower alkyl group or a substituted or unsubstituted phenyl group, R2 is hydrogen atom or a lower alkyl group or a substituted or unsubstituted phenyl group, or R1 and R2 are combined to form an alkylene group, and X is hydrogen, fluorine, chlorine or bromine with a proviso that three of said X may be the same or different atoms, but are not hydrogen at the same time.
    • 本发明涉及一种由通式[Ⅳ]表示的新的光学活性化合物的制备方法。 该方法包括在光学活性联萘酚钛络合物存在下使乙烯基醚与卤代乙醛反应的步骤。 由此,可以非常容易地制造新颖的光学活性化合物。 此外,新的光学活性化合物可以容易地被氧化成由通式[V]表示的新的光学活性α,β-二羟基酮。 这些新的光学活性化合物各自可用作有用的中间体。其中R是低级烷基或-Si(R3)3,其中R3是低级烷基,R3中的三个可以是相同或不同的基团,R1是 低级烷基或取代或未取代的苯基,R 2为氢原子或低级烷基或取代或未取代的苯基,或R 1和R 2结合形成亚烷基,X为氢,氟,氯或溴 条件是所述X中的三个可以是相同或不同的原子,但不是同时是氢。