The preparation and reactions of group IIB metal chloride stabilized complexes of (chlorofluoromethylene)tris(dimethylamino)phosphorane |
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Authors: | Michael J Van Hamme Donald J Burton |
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Institution: | Department of Chemistry, The University of Iowa, Iowa City, Iowa 52242 U.S.A. |
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Abstract: | 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. |
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