POLYFLUORINATED OLEFINS FROM REACTION OF PERFLUOROALKYL IODIDES WITH ALLYL CHLORIDE

During experiments on addition of perfluoroalkyl iodides to allyl chlo ride an unexpected reaction has been observed leading to polyfluorinat ed olefins R-F-CH2-CH=CH2 in addition to the expected adduct RFCH2-CHI -CH2Cl. Preliminary experimental results show that the relative amount s of these two products depend particularly on the molar ratio of reag ents and on temperature. A mechanism for the formation of the polyfluo rinated olefin is suggested. (C) 1997 Elsevier Science S.A.