Patent ID: 6184426
Filing Date: 2001-02-06
Classification: C07C

Abstract:
A process for forming an adduct of the formula RR.sup.1 R.sup.2 CCR.sup.1 R.sup.2 F or (FR.sup.1 R.sup.2 CCRR.sup.2 CH.sub.2).sub.2 wherein R is selected from the group consisting of CH.sub.3, CH.sub.2 F, C.sub.2 H.sub.4 F and F(CF.sub.2).sub.n CH.sub.2 CH.sub.2 where n is an integer from 1 to 10, each R.sup.1 is independently selected from the group consisting of H, Cl, F and CF.sub.3 and each R.sup.2 is independently selected from the group consisting of H, F and CF.sub.3, comprising:reacting a saturated compound of the formula RF with an olefin of the formula R.sup.1 R.sup.2 C.dbd.CR.sup.1 R.sup.2 in the liquid phase in the presence of antimony pentafluoride catalyst; provided that when (FR.sup.1 R.sup.2 CCR.sup.1 R.sup.2 CH.sub.2).sub.2 is formed, the saturated compound is CH.sub.3 CHF.sub.2 or FCH.sub.2 CH.sub.2 F and anhydrous HF is present.