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    • 5. 发明授权
    • Process for preparing a trifluoromethylbenzene derivative
    • 三氟甲基苯衍生物的制备方法
    • US4493800A
    • 1985-01-15
    • US506358
    • 1983-06-21
    • Yasuhisa FurutakaSadamu Ishii
    • Yasuhisa FurutakaSadamu Ishii
    • C07C255/49C07C120/04
    • C07C255/00C07C253/14
    • A process for preparing a trifluoromethylbenzonitrile derivative of the formula: ##STR1## wherein X is hydrogen, lower alkyl, halogenated lower alkyl, lower alkoxy, nitro, hydroxyl, amino, cyano, carboxyl or sulfon which comprises reacting trifluoromethylhalogenobenzene of the formula: ##STR2## wherein X is as defined above, and Y is halogen with copper (I) cyanide in a solvent selected from the group consisting of hexamethylphosphoric triamide, N-methylpyrrolidone and a mixture thereof in the presence of a catalyst selected from the group consisting of (A) bromine, (B) iodine, (C) a combination of bromine or iodine and metallic copper and (D) copper (II) bromide, by which process the compound (I) is prepared in a good yield, and by-products are produced in a lower yield than the conventional processes.
    • 制备下式的三氟甲基苄腈衍生物的方法:其中X是氢,低级烷基,卤代低级烷基,低级烷氧基,硝基,羟基,氨基,氰基,羧基或磺酸,其包括使式 :其中X如上所定义,Y是在选自六甲基磷酰三胺,N-甲基吡咯烷酮及其混合物的溶剂中的氰化铜(I)的卤素,所述溶剂在选择的催化剂存在下 由(A)溴,(B)碘,(C)溴或碘的组合和金属铜和(D)溴化铜(II)组成的组,通过该方法制备化合物(I) 产率和副产物的产量低于常规方法。