Preparation of unsaturated diesters by the catalytic oxidative c

Details Preparation of unsaturated diesters by the catalytic oxidative c Preparation of unsaturated diesters by the catalytic oxidative c

1977-07-08

1979-09-04

Myers, Jane S.

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

Organic compounds

Carboxylic acid esters

560 81, 560193, C07C 6952

Patent

active

041669134

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, oxygen, at least a stoichiometric amount of an enol ether or alkoxycycloalkene and at least an equal molar quantity of an alcohol based on the enol ether or alkoxycycloalkene, with a diolefin having the formula ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and 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 and a copper or iron oxidant salt compound.
Alternatively, a ligand or coordination complex compound of the metal salt compound may be employed as a co-catalyst.

REFERENCES:
patent: 3397226 (1968-08-01), Fenton

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