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    • 39. 发明授权
    • Process for the production of aromatic trifluoromethyl compounds of the
benzene series
    • 生产苯系芳香族三氟甲基化合物的方法
    • US4080392A
    • 1978-03-21
    • US641778
    • 1975-12-17
    • Kurt Ryf
    • Kurt Ryf
    • C07C22/08C07C17/20C07C25/14
    • C07C17/206
    • An improved process for the production of aromatic trifluoromethyl compounds of the benzene series by conversion of the corresponding trichloromethyl compound with hydrogen fluoride. The aromatic trichloromethyl compound of the benzene series is converted in the presence of antimony pentachloride, which is a catalyst, in a quantity, related to the quantity of the trichloromethyl compound, of 200 to 700 ppm per trichloromethyl group in the trichloromethyl compound, with a stoichiometric quantity, or at most a 2 percent excess, of hydrogen fluoride. The conversion is conducted at a pressure of 20 to 45 atm., at a temperature of 60.degree. to 75.degree. C. and with intermixing which is characterized by a Reynolds number between 50,000 and 80,000. Yields of around 98 percent are achieved.
    • 通过相应的三氯甲基化合物与氟化氢的转化来生产苯系芳族三氟甲基化合物的改进方法。 在三氯甲基化合物中,苯系列的芳族三氯甲基化合物在与三氯甲基化合物的量相关的五氯化锑存在下,与三氯甲基化合物中的三氯甲基相比为200〜700ppm,与 化学计量量,或至多2%过量的氟化氢。 转化率在20〜45atm的压力下进行,温度为60〜75℃,混合时的雷诺数为50,000〜80,000。 产量达到98%左右。