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    • 9. 发明授权
    • Oxazolinone derivatives, process for preparing the same, and use of the
same
    • 恶唑啉酮衍生物,其制备方法及其用途
    • US5691278A
    • 1997-11-25
    • US515608
    • 1995-08-16
    • Sang Woo ParkKye Jung ShinDong Chan Kim
    • Sang Woo ParkKye Jung ShinDong Chan Kim
    • A01N43/76C07D213/82C07D263/42C07D413/04C07D263/22
    • C07D413/04A01N43/76C07D263/42
    • An oxazolinone derivative compound, represented by the general formula I, shows superior herbicidal activity against, especially, dicotyledonous vegetables. It is effective upon applying both before and after the sprouting of vegetables. It is prepared by condensating an .alpha.-amino acid represented by the general formula II with an acid chloride represented by the general formula III, to give an acyl .alpha.-amino acid represented by the following formula IV: reacting the acyl .alpha.-amino acid with acetic anhydride; and dehydrating the resulting adduct: ##STR1## wherein, R represents a lower alkyl group or a phenyl group containing halogen, lower alkyl or trifluoromethyl group; X represents halogen atom, carbomethoxy group, nitro group, or halogen or trifluoromethyl-substituted phenoxy group, being the same or different from one another; A represents nitrogen or carbon atom; and n is an integer of 1 to 3.
    • 由通式I表示的恶唑啉酮衍生物化合物对于特别是双子叶蔬菜显示出优异的除草活性。 在蔬菜发芽前后均适用。 通过将由通式II表示的α-氨基酸与由通式III表示的酰氯缩合而制备,得到由下式IV表示的酰基α-氨基酸:使酰基α-氨基酸与 醋酸酐; (II)其中R表示低级烷基或含有卤素的低级烷基或三氟甲基的基团, ; X表示卤原子,甲酯基,硝基或卤素或三氟甲基取代的苯氧基,彼此相同或不同; A表示氮或碳原子; n为1〜3的整数。