METHOD OF PRODUCING FLUOROAMIDE AND FLUORONITRILE Russian patent published in 2012 - IPC C07C255/13 C07C231/02 C07C235/06 C07C253/20 

FIELD: chemistry.

SUBSTANCE: invention discloses a method of producing fluoroamide of formula CF₂=CF-R_f-CONH₂ (2), where R_f denotes a perfluoroalkylene group or a perfluorooxyalkylene group containing 2-20 carbon atoms by reacting fluoroester CF₂=CF-R_f-COOR (1), where R denotes methyl or ethyl, with ammonia or ammonium hydroxide in a solvent (a) in form of an alcohol, in ratio of ammonia or ammonium hydroxide to 1.0 fluoroester ranging from 1.1 to 2.0 mol at temperature from -5°C to 40°C; and a method of producing fluoronitrile of formula CF₂=CF-R_f-CN (3), involving reaction of the obtained fluoroamide (2) with a dehydrating agent (c), which is an amine or an acid anhydride in ratio of amine: 1.0 acid anhydride equal to 0.8-3.0, carried out in a solvent (b), having an ether bond, an ester bond, a ketone group or a cyano group, where the amine is added in droplets to the mixture of fluoroamide and acid anhydride in the presence of solvent (b); molar ratio of the dehydrating agent (c) to 1.0 fluoroamide is equal to 0.9-2.5; the reaction takes place at temperature from -30°C to 50°C.

EFFECT: simple methods which ensure high output.

8 cl, 9 ex, 1 tbl