C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/480.6, 260/4
C07C 69/52 (2006.01) C07C 69/76 (2006.01)
Patent
CA 1113112
ABSTRACT OF THE DISCLOSURE A process for the preparation of an unsaturated diester having the formula Image wherein R is an alkyl group of from 1 to 8 carbon atoms or an aralkyl group containing 6 carbon atoms in the ring and from 1 to 4 carbon atoms in the alkyl substituent, and R1 to R4 is hydrogen, a halogen, an alkyl group of from 1 to 4 carbon atoms or an aryl group containing 6 carbon atoms in the ring, by reacting carbon monoxide and oxygen with a diolefin having the formula Image wherein R1 to R4 which may be the same or different is as hereinabove described in the presence of a catalytic amount of a platinum group metal compound, a copper or iron oxidant salt compound and a stoichiometric amount of a dehydrating agent. Alternatively, a ligand or coordination complex compound of the metal salt compound, and catalytic quantities of an alcohol may be employed.
304962
Kesling Haven S.
Zehner Lee R.
Atlantic Richfield Company
Osler Hoskin & Harcourt Llp
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