METHOD FOR PREPARING FLUORINE-CONTAINING COMPOUND COMPRISING FROM 1 TO 20 CARBON ATOMS BY LIQUID-PHASE FLUORINATION Russian patent published in 2004 - IPC

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for preparing fluorine-containing compound, such as industrially useful derivative of acid fluoroanhydride. Method for preparing fluorine-containing compound of the formula: R^AF-E^F1 (V) or compound of the formula: R^BF-E^F2 (VI) is carried out by interaction of compound of the formula: R^A-E¹ (I) with the fluorine content less 10 wt.-% with compound of the formula: R^B-E² (II) to yield compound of the formula: R^A-E-R^B (III) with the fluorine content at least 10 wt.-%. Method involves the fluorination reaction of compound of the formula (III) with gaseous fluorine to form compound of the formula: R^AF-E^F-R^BF (IV) and the following conversion of compound of the formula (IV) to compound of the formula (V) and/or to compound of the formula (VI) wherein R^A, R^B: each represents independently monovalent saturated hydrocarbon group, halogenated monovalent saturated hydrocarbon group, monovalent saturated hydrocarbon group comprising oxygen atom in ether group, halogenated (monovalent saturated hydrocarbon group comprising oxygen atom in ether group), or by the fluorination reaction in liquid phase and each group comprises from 1 to 20 carbon atoms; R^HF: group comprising at least one hydrogen atom in group taken among monovalent saturated hydrocarbon group, partially halogenated monovalent saturated hydrocarbon group, monovalent saturated hydrocarbon group comprising oxygen atom in ether group, and partially halogenated (comprising oxygen atom in ether group of monovalent hydrocarbon) group substituted with fluorine atom; R^AF, R^BF: R^AF represents group corresponding to R^A, and R^BF represents group corresponding to R^B; each group comprises from 1 to 20 carbon atoms; in the case when each among R^A and R^B represents monovalent saturated hydrocarbon group, halogenated monovalent saturated hydrocarbon group, monovalent saturated hydrocarbon group comprising oxygen atom in ether group, or halogenated (comprising oxygen atom in ether group, saturated hydrocarbon) group then R^AF and R^BF are the same groups as R^A and R^B, respectively, or groups comprising at least one fluorine atom presenting in groups R^A and R^B substituted with fluorine atom; in the case when R^A and R^B represent monovalent organic groups (R^H), R^AF and R^BF represent R^HF, respectively; E¹, E²: one among groups represents CH₂OH and another group represents COX or SO₂X wherein X means halogen atom; E: -CH₂COO-group formed by interaction of E¹ and E²; E^F: -CF₂COO-group; E^F1, E^F2: each represents independently -COF-group formed by dissociation of E^F. Also, invention proposes compounds synthesized by this method. Invention provides elevating yield of the end product, compound that are useful as material for preparing fluorinated resin.

EFFECT: improved preparing method.

22 cl, 49 ex