Preparation of unsaturated diesters by catalytic oxidative carbo

Details Preparation of unsaturated diesters by catalytic oxidative carbo Preparation of unsaturated diesters by catalytic oxidative carbo

1977-06-22

1979-10-16

Myers, Jane S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 81, 560193, C07C 6952

Patent

active

041714504

ABSTRACT:
A process for the preparation of an unsaturated diester having the formula ##STR1## 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 R.sub.1 to R.sub.4 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 ##STR2## wherein R.sub.1 to R.sub.4 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 for 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.

REFERENCES:
patent: 3397226 (1968-08-01), Fenton
patent: 3952034 (1976-04-01), Thompson et al.

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