Preparation of .delta.-formylvalerates

Details Preparation of .delta.-formylvalerates Preparation of .delta.-formylvalerates

1984-05-09

1989-01-31

Garner, Vivian

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

Organic compounds

Carboxylic acid esters

560179, 560205, 560265, C07C 6738, C07C 6967

Patent

active

048017388

ABSTRACT:
.delta.-Formylvalerates are prepared by a process wherein a 3-pentenoate is treated with an isomerization catalyst at elevated temperatures and a 4-pentenoate is distilled off, and the resulting 4-pentenoate is reacted with carbon monoxide and hydrogen at from 80 to 160.degree. C. under from 1 to 30 bar in the presence of a rhodium carbonyl complex which has been modified with tertiary organic phosphines or phosphites.

REFERENCES:
patent: 3253018 (1966-05-01), Zachry et al.
patent: 3527809 (1970-09-01), Pruett et al.
patent: 3697580 (1972-10-01), Overwein et al.
patent: 4360692 (1982-11-01), Kummer et al.
Bull. Chem. Soc. of Japan, Band 46, S.528, Akio Matsudo.

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