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Catalytic mixture based on partially fluorinated titane and zinc halogenides and their application in the preparation of fluorinated organic compounds
Catalytic mixture based on partially fluorinated titane and zinc halogenides and their application in the preparation of fluorinated organic compounds
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机译:基于部分氟化的钛氧烷和卤化锌的催化混合物及其在制备氟化有机化合物中的应用
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摘要
Liquid phase process for the preparation of organic compounds (I) with 1 fluorine (F) atom comprises (a) addition of hydrogen fluoride (HF) to an unsaturated carbon-carbon (C-C) group or (b) chlorine-fluorine (Cl-F) exchange with HF on completely halogenated C atom(s) in the starting material. Both reactions are catalysed by metal halide, comprising a (partly) fluorinated mixture of titanium (Ti) chloride or bromide in combination with (partly) fluorinated tin tetrachloride (SnCl4) or tetrabromide (SnBr4), in which the Ti:Sn atomic ratio is 9:1 to 1:9. Also claimed is a (partly) fluorinated mixture (II) of Ti tetrachloride (TiCl4) and SnCl4 with a Ti:Sn atomic ratio of 1:9 to 9:1, preferably 1:2 to 2:1, obtained by reacting TiCl4 and SnCl4 with HF, using a molar ratio of HF:(TiCl4 + SnCl4) of 4:1, especially 8:1.
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