Process for reducing carbonylation of aldehydes, uses as hemiace

Details Process for reducing carbonylation of aldehydes, uses as hemiace Process for reducing carbonylation of aldehydes, uses as hemiace

1985-05-10

1987-09-01

Lone, Werren B.

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

Organic compounds

Carboxylic acid esters

260404, 260410, 2604105, 2604106, 560 1, 560 8, 560112, 560122, 560123, 560124, 560125, 560126, 560179, 564132, 568420, 568428, 568484, 568607, 568622, 568625, 568662, 568670, C07C 6724

Patent

active

046910484

ABSTRACT:
The invention concerns a process for reducing carbonylation of an aldehyde wherein the aldehyde is used as hemiacetalester, the reaction being conducted in the presence of a catalyst consisting of a cobalt carbonyl complex.
The hemiacetal-ester may be formed in situ by reacting an acetal with an anhydride of acid.
The process preferentially yields alkylene-glycol mono-esters, free of esterified, for a ratio H.sub.2 /CO ranging from 1:1 to 3:1 and preferentially 2-alkoxy aldehydes, for a ratio H.sub.2 /CO ranging from 0.1:1 to 0.5:1.

REFERENCES:
patent: 4168391 (1979-09-01), Shinkard et al.
patent: 4431835 (1984-02-01), Gauthier-Lafaye et al.
patent: 4447648 (1984-05-01), Wegman

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