Patent ID: 7189884

Claim:
A process for the synthesis of 1,3,3,3 tetrafluoropropene comprising: a) reacting a compound of formula (I) X 1 X 2 with a compound of formula (II) CF 3 CH═CH 2 to produce a reaction product comprising a compound of formula (III) CF 3 CHX 1 CH 2 X 2 , wherein X 1 and X 2 are each independently selected from the group consisting of hydrogen, fluorine, chlorine, bromine and iodine, provided that X 1 and X 2 are not both hydrogen; b) when X 2 in formula (III) is not fluorine, fluorinating the compound of formula (III) to produce a reaction product comprising a compound of formula (III) wherein X 1 is as described above and X 2 is fluorine; and c) exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.