METHOD OF PRODUCING FLUORO-HALOGENATED ETHERS Russian patent published in 2011 - IPC C07C43/17 C07C41/24 C07C41/06 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing perfluoroalkylvinyl ethers, having the general formula: R_fO-CF=CF₂ (IA) where R_f is C₁-C₃, preferably, C₁-C₂, perforated alkyl substitute, involving the following steps: 1) reaction of hypofluorite of formula R_fOF, where R_f is as described above, with an olefin of formula: CY"Y=CY'Cl(II) where Y, Y' and Y", identical or different from each other, denote H, Cl, Br, provided that Y, Y' and Y" do not simultaneously denote hydrogen; 2) dehalogenation or dehydrohalogenation of fluorohalogenated ethers obtained at step 1) and obtaining vinyl ethers of formula: R_fO-CY=CY_IIF (IV) where Y_I and Y_II, identical or different, assume values H, Cl, Br, provided that Y_I and Y_II do not simultaneously denote H; 3) fluorination of vinyl ethers (IV) with fluorine and obtaining fluorohalogenated ethers of formula: R_fO-CFY_I=CF₂Y_II (I) where Y_I, Y_II, identical or different, denote Cl, Br, H, provided that Y_I and Y_II cannot simultaneously denote H, and R_f is as described above; 4) dehalogenation or dehydrohalogenation of fluoro-halogenated ethers of formula (I) and obtaining vinyl ethers of formula: R_fO-CF=CF₂ (IA).

EFFECT: obtaining desired products with high output and selectivity.

15 cl, 8 ex