| 摘要 |
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: RAF-EF1 (V) or compound of the formula: RBF-EF2 (VI) is carried out by interaction of compound of the formula: RA-E1 (I) with the fluorine content less 10 wt.-% with compound of the formula: RB-E2 (II) to yield compound of the formula: RA-E-RB (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: RAF-EF-RBF (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 RA, RB: 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; RHF: 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; RAF, RBF: RAF represents group corresponding to RA, and RBF represents group corresponding to RB; each group comprises from 1 to 20 carbon atoms; in the case when each among RA and RB 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 RAF and RBF are the same groups as RA and RB, respectively, or groups comprising at least one fluorine atom presenting in groups RA and RB substituted with fluorine atom; in the case when RA and RB represent monovalent organic groups (RH), RAF and RBF represent RHF, 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; EF: -CF2COO-group; EF1, EF2: each represents independently -COF-group formed by dissociation of EF. 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 |
