초록 ▼

Described is a carbonylation process using novel homogeneous trihydrocarbyl silyl-substituted alkyl diaryl phosphine transition metal complexes 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 r

Described is a carbonylation process using novel homogeneous trihydrocarbyl silyl-substituted alkyl diaryl phosphine transition metal complexes 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 the group consisting of Group VIII transition metals, 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, are disclosed. These materials exhibit high thermal stability and are superior 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. Specifically, tris-(trimethyl silyl-ethyl diphenyl phosphine) rhodium carbonyl hydride, [(CH3)3Si-CH2CH2-PPh2]3Rh(CO)H and tris [bis-(diphenylphosphinoethyl)dimethyl silane]rhodium carbonyl hydride, [(CH3)2Si-CH2CH2-PPh2]3Rh(CO)H, are selective olefin hydroformylation catalysts, particularly in the presence of excess trihydrocarbyl silyl-substituted alkyl diaryl phosphine ligand.

대표청구항 ▼

A combined hydroformylation-aldolization process for converting, a Cn olefin to a C2n+2 aldehyde comprising the steps of: (a) reacting said olefin with CO and H2 at a temperature in the range of about 50°to 200°C. and a total pressure in the range of about 15 to 2000 psia in a reaction zone containi

A combined hydroformylation-aldolization process for converting, a Cn olefin to a C2n+2 aldehyde comprising the steps of: (a) reacting said olefin with CO and H2 at a temperature in the range of about 50°to 200°C. and a total pressure in the range of about 15 to 2000 psia in a reaction zone containing a liquid reaction mixture comprising a base aldol condensation catalyst and a homogeneous, non-charged catalyst complex of the formula: [(Ar2PQ)ySiR4-y]g.(RhXn)s wherein Ar is a substituted or unsubstituted C6 to C10 aromatic radical, Q is an unsubstituted or substituted C1 to C30 saturated open chain alkylene radical; R is an unsubstituted or monosubstituted C1 to C10 hydrocarbyl radical, X is an anion or organic ligand, excluding halogen, satisfying the valence and coordination sites of the metal, y is 1 to 6, g is 1 to 6 with the proviso that g times y is 1 to 6, n is 2 to 6, s is 1 to 3, said substituents on said hydrocarbyl radical, being chemically unreactive with materials used in and the products of the hydroformylation reaction, and (b) withdrawing said liquid reaction mixture from said reaction zone and recovering said C2n+2 aldehyde.