Preparation of hexenedioic acid diesters

Details Preparation of hexenedioic acid diesters Preparation of hexenedioic acid diesters

1987-11-16

1989-08-15

Lone, Werren B.

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

Organic compounds

Carboxylic acid esters

502230, 502326, 560190, 560204, 562592, 562595, C07C 6738

Patent

active

048576573

ABSTRACT:
Hexene-1,6-dioates, readily hydrogenated into adipates (which in turn are conveniently hydrolyzed into adipic acid), are prepared by reacting carbon monoxide, an alcohol and at least one dichlorobutene, in the presence of a catalytically effective amount of palladium or a palladium compound and no more than two equivalents (relative to the dichlorobutene) of a tertiary amine reaction promoter; in an alternate embodiment, the tertiary amine and the dichlorobutene are first converted into a quaternary ammonium chloride intermediate.

REFERENCES:
patent: 3309403 (1967-03-01), Mador et al.
patent: 4166913 (1979-09-01), Kesling et al.
patent: 4171450 (1979-10-01), Kesling et al.
patent: 4321408 (1982-03-01), Mauer et al.
patent: 4386217 (1983-05-01), Ainbinder et al.
patent: 4552976 (1985-11-01), Lin et al.

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