Trihydrocarbyl silyl-substituted alkyl diaryl phosphine cobalt iridium and ruthenium complexes and their use as homogeneous catalysts

摘要

Homogenous trihydrocarbyl silyl- substituted alkyl diaryl phosphine transition metal complex catalysts of the general formula: [(Ar2PQ)ySiR4-y]g(MXn)s wherein Ar is a C6 to C10 aromatic hydrocarbyl radical, Q is a C1 to C30 saturated straight chain divalent radical, R is a C1 to C10 hydrocarbyl, wherein Ar, Q and R can be substituted or unsubstituted, y is 1 to 4, g times y is 1 to 6, M is a transition metal selected from Co, Ir, Ru, and X is an anion or organic ligand excluding halogen satisfying the valence and coordination sites of the metal, n is 2 to 6 and s is 1 to 3, exhibit high thermal stability and are especially useful catalysts for the selective hydroformylation of olefins, particularly in the presence of excess quantities of ligand of the formula: (Ar2PQ)ySiR4-y wherein Ar, Q, R and y are as previously defined.