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    • 1. 发明授权
    • Method for producing 3,3-dichloro-1,1,1-triflouroacetone
    • 3,3-二氯-1,1,1-三氟丙酮的制备方法
    • US5905174A
    • 1999-05-18
    • US60180
    • 1998-04-15
    • Masatomi KanaiTakashi SakayaMineo WatanabeYoshihiko GotoRyo Nadano
    • Masatomi KanaiTakashi SakayaMineo WatanabeYoshihiko GotoRyo Nadano
    • B01J27/08B01J27/125C07C45/63C07C45/82C07C45/83C07C45/00
    • C07C45/82B01J27/08B01J27/125C07C45/63C07C45/83
    • The invention relates to a method for producing 3,3-dichloro-1,1,1-trifluoroacetone. This method includes a step of fluorinating pentachloroacetone by hydrogen fluoride in the presence of a fluorination catalyst. This fluorination may be conducted in a liquid phase in the presence of an antimony compound as the fluorination catalyst. Alternatively, the fluorination may be conducted in a gas phase in the presence of a fluorination catalyst which may be a fluorinated alumina or at least one compound of at least one metal selected from Al, Cr, Mn, Ni, and Co. The method is suited to an industrial scale production of 3,3-dichloro-1,1,1-trifluoroacetone. The invention further relates to another method for producing 3,3-dichloro-1,1,1-trifluoroacetone. This method includes a step of purifying a crude 3,3-dichloro-1,1,1-trifluoroacetone by a distillation in the presence of water, thereby to produce 3,3-dichloro-1,1,1-trifluoroacetone which is substantially free of organic matters other than 3,3-dichloro-1,1,1-trifluoroacetone. This crude 3,3-dichloro-1,1,1-trifluoroacetone may be the reaction products of the fluorination of pentachloroacetone in a gas phase. Due to the provision of the another method, 3,3-dichloro-1,1,1-trifluoroacetone can be produced with high yield.
    • 本发明涉及一种生产3,3-二氯-1,1,1-三氟丙酮的方法。 该方法包括在氟化催化剂存在下用氟化氢氟化五氯丙酮的步骤。 该氟化可以在作为氟化催化剂的锑化合物的存在下在液相中进行。 或者,氟化可以在可以是氟化氧化铝或至少一种选自Al,Cr,Mn,Ni和Co的至少一种金属的化合物的氟化催化剂的存在下在气相中进行。该方法是 适合工业规模生产3,3-二氯-1,1,1-三氟丙酮。 本发明还涉及制备3,3-二氯-1,1,1-三氟丙酮的另一种方法。 该方法包括在水存在下通过蒸馏纯化粗制3,3-二氯-1,1,1-三氟丙酮的步骤,从而产生3,3-二氯-1,1,1-三氟丙酮,其基本上 不含3,3-二氯-1,1,1-三氟丙酮以外的有机物。 该粗的3,3-二氯-1,1,1-三氟丙酮可以是五氯丙酮在气相中氟化的反应产物。 由于提供另一种方法,可以高产率制备3,3-二氯-1,1,1-三氟丙酮。