METHOD OF OBTAINING 2,3,3,3-TETRAFLUOROPROPENE Russian patent published in 2015 - IPC C07C17/20 C07C17/25 C07C17/383 C07C21/18 

FIELD: chemistry.

SUBSTANCE: invention relates to versions of method of obtaining 2,3,3,3-tetrafluoropropene. One of versions includes the following stages: (a) catalytic reaction of 1,1,1,2,3-pentachlorpropane and/or 1,1,2,2,3-pentachloropropane with HF with formation of product 2-chloro-3,3,3-trifluor0propene; (b) catalytic reaction of obtained in such way 2-chloro-3,3,3-trifluoropropene to 2,3,3,3-tetrafluoropropene, where stage (a) is carried out in liquid phase; and where temperature of the process at stage (b) is, at least, 30°C higher than temperature of the process at stage (a).

EFFECT: application of claimed method makes it possible to obtain desirable product with considerable selectivity.

15 cl, 15 ex, 1 tbl, 4 dwg