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    • 2. 发明公开
    • Process for optical resolution of 1,2-diol derivatives
    • OptischesAuflösungsverfahrenvon 1,2-Diol-Derivaten。
    • EP0655504A2
    • 1995-05-31
    • EP94118512.6
    • 1994-11-24
    • KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
    • Takahashi, EisakuKimura, TakashiKumazawa, Satoru
    • C12P41/00C12P7/62
    • C12P7/62C12P41/004
    • This invention provides a process for producing an optically active 1,2-diol derivative by optical resolution. The optically active 1,2-diol derivative of the formula (I) which is capable of utilizing as an intermediate of fungicidal optically-active azole derivatives can be produced by esterifying a 1,2-diol derivative of the formula (I) as a substrate with a carboxylic acid derivative of the formula (II) as a reagent in the presence of a lipase as a catalyst.


      wherein R 1 is C1 - C5 alkyl group, C3 - C7 cycloalkyl group or C1 - C5 haloalkyl group, R 2 is C1 - C3 alkyl group substituted by a phenyl group which may have one or two halogen atoms and/or C1 - C4 alkyl groups, C2 - C3 alkenyl group substituted by a phenyl group which may have one or two halogen atoms and/or C1 - C4 alkyl groups, or C1 - C3 alkyl group substituted by a phenoxy group which may have one or two halogen atoms and/or C1 - C4 alkyl groups, R 3 is C1 - C10 alkyl group or aryl group, and R 4 is hydrogen atom, C1 - C5 alkyl group, C2 - C4 alkenyl group or COR 3 .
    • 本发明提供了通过光学拆分制造光学活性1,2-二醇衍生物的方法。 可以利用作为杀真菌的光学活性唑衍生物的中间体的式(I)的光学活性1,2-二醇衍生物可以通过将式(I)的1,2-二醇衍生物酯化为 在作为催化剂的脂肪酶存在下,用式(II)的羧酸衍生物作为试剂的底物。 其中R 1为C 1 -C 5烷基,C 3 -C 7环烷基或C 1 -C 5卤代烷基,R 2为被可具有一个或两个卤素原子的苯基取代的C 1 -C 3烷基 和/或C 1 -C 4烷基,被可具有一个或两个卤素原子和/或C 1 -C 4烷基的苯基取代的C 2 -C 3烯基或被苯氧基取代的C 1 -C 3烷基, 一个或两个卤素原子和/或C 1 -C 4烷基,R 3是C 1 -C 10烷基或芳基,R 4是氢原子,C 1 -C 5烷基,C 2 -C 4烯基或COR 3 。