C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/495.1
C07C 67/36 (2006.01) C07C 69/14 (2006.01)
Patent
CA 1272488
ABSTRACT A process for the production of acetate asters by the catalytic reaction of an alcohol of the formula ROH and carbon monoxide in contact with a homogeneous catalyst system of rhodium metal atom, a phosphorus containing ligand in which there is present at least one ozo (=0) oxygen atom attached to a phosphorus atom or a carbon atom to form a Z group and the ? or ? group in said Z group is located at least one carbon atom removed and preferably from Z-4 carbon atoms removed from the phosphorus atom of the molecules represented by the formulas Image (V) Image (VI) and a halogen promoter, under mild reaction conditions. wherein R' is aryl, alkaryl, aralkyl or alkyl, and wherein 1 or more of said R' groups can be substituted with a Z group but not more than 3 of said R' groups in the molecule are so substituted; a is an integer from 0-4; b is an integer from 0-3; and Z is P(O)R'R': - C(O)OR" or C(O)R", wherein R" is R' and wherein ROH is methanol or a mixture of methanol and at least one higher alcohol.
488473
Sim & Mcburney
Union Carbide Corporation
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