Hydroxycarbonylation of butadiene

Details Hydroxycarbonylation of butadiene Hydroxycarbonylation of butadiene

1994-10-19

1997-04-29

Barts, Samuel

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

Organic compounds

Carboxylic acids and salts thereof

562598, C07C 5114

Patent

active

056250967

ABSTRACT:
Butadiene or derivative thereof is selectively hydroxycarbonylated into at least one pentenoic acid (the pentenoic acids are themselves facilely converted, via hydroxycarbonylation, into adipic acid, a basic starting material for the production of nylon 66 polymers), by reacting same with carbon monoxide and water, at a pressure greater than atmospheric, in the presence of a catalytically effective amount of (1) a palladium catalyst which is soluble in the medium of reaction and (2) crotyl chloride, the amount of the crotyl chloride being at least two mol thereof per mole of palladium values and said palladium values/crotyl chloride at least in part comprising a palladium/crotyl pi-complex, and the amount of water present in the medium of reaction being no greater than about 20% by weight thereof.

REFERENCES:
patent: 5041642 (1991-08-01), Jenck
patent: 5288903 (1994-02-01), Bunel et al.

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