OXYGENATION OF CYCLOPALLADATED N,N-DIMETHYLBENZYLAMINE COMPLEXES BY INORGANIC AND ORGANIC PEROXIDES - OXYGEN INSERTION INTO THE PALLADIUM-CARBON BOND

Oxygenation of cyclopalladated benzylamine complexes of the type [Pd(C 6H4CH2NMe2-2)X] (1, X = (MeCN)sBF4; 2, X = C6H4CH2NMe2-2; 3, X = OC6H4 -CH2NMe2-2; 5, X = Cl) with tert-butyl hydroperoxide (TBHP) and a vana dium catalyst (eg. VO(acac)2) affords the corresponding phenolate comp lexes. The rate of oxygenation increases strongly with the nucleophili city of the organopalladium substrate. Complex 3 crystallizes in the m onoclinic space group P2(1)/c with a = 11.171(1) angstrom, b = 8.524(1 ) angstrom, c = 18.101(1) angstrom, beta = 94.31(1)-degrees, V = 1718. 7(3) angstrom3, and Z = 4, the structure was refined to R = 0.026 and R(w) = 0.030 for 2938 observed reflections.