to the discovery that during the fluorination of certain fluoroolefm starting reagents particularly 1 1 2 3 tetrachloropropene oligomerization polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation the present invention also illustrates that providing one or more organic co feed to the fluooolefin starting stream reduces such oligomerization polymerization and improves catalystic stability application_number US 201715464461 A description according to one embodiment the present invention includes a manufacturing process for making 2 3 3 3 tetrafluoroprop 1 ene using a starting material according to formula i wherein x is independently selected from f cl br and it provided that at least one x is not fluorine in certain embodiments the compound s of formula i contains at least one chlorine a majority of the xs as chlorine or all xs as chlorine in certain embodiments the compound s of formula i include 1 1 2 3 tetrachloropropene 1230xa processes applicable to the present invention include without limitation integrated multistep processes as described in u s pat no 8 084 653 and us published patent application 2009 0240090 the contents of each of which are incorporated herein by reference the method generally includes at least three reaction steps in the first step a starting composition of formula i such as 1 1 2 3 tetrachloropropene is reacted.