SOME REACTIONS OF DI-μ-CHLOROBISDIPALLADIUM(II)

Article abstract of DOI:10.1016/S0022-328X(00)98636-4

The preparation of a series of complexes, II-XIII, containing the 1-formylpropylpalladium(II) moiety from di-μ-chlorobis<3-(dimethylamino)-1-formyl-2,2-dimethyl-C,N>dipalladium(II) (I) is described, and the structures of these complexes are discussed in terms of their 1H NMR and IR spectra.The relatively low values for ν(C=O) are consistent with the presence of a metal-carbonyl group interaction and the influence of changes in the coordination sphere on this interaction is discussed.Reaction of I with allyl bromide or benzyl chloride gave the η²-vinyl ether complexes (XV and XVI) while methyl iodide and n-butyl chloride failed to react.I resisted insertions into the Pd-C bond when treated with methyl acrylate, diphenylacetylene, or phenylacetylene.In the last of these, consumption of both acetylene and I was observed, the former by self-condensation and the latter with release of the hydrochloride of 3,3-dimethyl-4-dimethylaminobutanal which exists in the cyclic form XVIII.