Patent ID: 7319175
Filing Date: 2008-01-15
Classification: B01J,C01G,C07C,Y02P

Abstract:
1. A liquid-phase method for synthesizing partially halogenated, fluorine-containing organic compounds from saturated starting material or starting material having unsaturated bonds by halogen-fluorine exchange or addition of hydrogen fluoride using hydrogen fluoride in the presence of an Sb(V) catalyst, wherein used catalyst which is reduced to Sb(III) is regenerated by oxidation by reacting the catalyst with elemental halogen, comprising the step of providing a reaction mixture comprising used catalyst, partially halogenated, fluorine-containing organic compounds synthesized from the starting material and optionally starting material or unsaturated intermediates, wherein the regeneration is carried out such that elemental halogen does not come into contact with organic starting materials or intermediate products so that at most 10% by weight of the starting material is converted to undesired side products, and wherein the regeneration is carried out by introducing the elemental halogen into said reaction mixture after starting material or unsaturated intermediates are permitted to react.