Patent ID: 9079818
Filing Date: 2015-07-14
Classification: C07C

Abstract:
1. A process for the synthesis of 2,3,3,3-tetrafluoropropene comprising: (a) reacting hydrogen fluoride (HF) at a temperature of from about 0° C. to about 250° C. and at a pressure of from about 500 to about 1000 psig with a compound of formula (IIA) to produce an intermediate reaction product comprising from about 40 wt. % to about 70 wt. % CF 3 CHFCH 2 F, and (b) exposing at least a portion of said intermediate reaction product to reaction conditions effective to convert at least a portion of said CF wherein each X 2 is independently selected from the group consisting of hydrogen, chlorine, bromine, fluorine and iodine, Z is F wherein said exposing step (b) comprises a liquid phase reaction or a vapor phase reaction, wherein the liquid phase reaction comprises contacting at least a portion of said CF 3 CHFCH 2 F with a potassium hydroxide solution and wherein the vapor phase reaction comprises contacting at least a portion of said CF 3 CHFCH 2 F with at least one metal-based catalyst selected from the group consisting of Ni-mesh, Ni/C, Cr 2 O 3 , activated carbon, Pd/C, and FeCl 3 .