Process for the preparation of cis-1,2-trans-4-cyclohexane trica

Details Process for the preparation of cis-1,2-trans-4-cyclohexane trica Process for the preparation of cis-1,2-trans-4-cyclohexane trica

1991-05-22

1992-09-08

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

562497, C07L 6736

Patent

active

051459876

ABSTRACT:
A process is disclosed for preparing cyclohexane tricarboxylic acids and esters thereof comprising contacting carbon monoxide, cis-1,2,3,6-tetrahydrophthalic acid anhydride and water or a lower alkanol at elevated pressure and temperature and in the presence of a palladium complex and an ether solvent wherein the selectivity to cis-1,2-trans-4-cyclohexane tricarboxylic acids and esters thereof is greater than that obtained in the absence of the ether solvent.

REFERENCES:
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patent: 3444237 (1969-05-01), Jaffe
patent: 4681707 (1987-07-01), Alper
Bittler et al., Angew. Chem. internat. Edit. 7 (1968) 329-335.
Cavinato et al., Journal of Molecular Catalysis 10 (1981) 161-170.
Alper et al., J. Chem. Soc., Chem. Commun. (1983) 1270-1271.
Fenton, J. Org. Chem. 38 (1973) 3192-3198.
James et al., JACS 98 (1976) 1810-1823.

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