PREPARATION AND REACTIONS OF GROUP IIB METAL CHLORIDE STABILIZED COMPLEXES OF (CHLOROFLUOROMETHYLENE)TRIS(DIMETHYLAMINO) PHOSPHORANE

A facile dechlorination reaction occurs between [((CH3)2N)3 +PCFCl2]Cl- and Group IIB metals to form addition complexes of the type [((CH3)2N)3P+ CFCl-(MCl)]Cl- where M = Zn, Cd, or Hg. These complexes exhibit surprising stability in ethereal solvents, and serve as effective 1-chloro-1-fluorovinyl transfer agents via the Wittig reaction by dissociation into [(CH3)2N]3PCFCl and the metal chloride. 19F and 31P NMR, as well as derivative formation, substantiate that these complexes are indeed quaternary phosphonium compounds which contain covalent carbonmetal bonds. © 1979.