Patent ID: 8835699

Claim:
A process for preparing 2,3,3,3-tetrafluoropropene (CF 3 CF═CH 2 ), comprising the steps of: dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH 3 CF 2 CF 3 , HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH 2 FCHFCF 3 , HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base; and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH 3 CF 2 CF 3 , 1,1,1,2-tetrafluoro-2-chloropropane, CH 2 FCHFCF 3 , and/or 1,1,1,2-tetrafluoro-3-chloropropane.