Process for reducing carbonylation of aldehydes, uses as hemiacetalesters, catalyzed by cobalt carbonyl complexes

Patent 4691048 Issued on September 1, 1987. Estimated Expiration Date:

May 10, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Production of ethanol from methanol
Patent #: 4168391
Issued on: 09/18/1979
Inventor: Slinkard , et al.

Hydrocarbonylation/carbonylation of alkyl carboxylates
Patent #: 4431835
Issued on: 02/14/1984
Inventor: Gauthier-Lafaye , et al.

Process for making aldehydes from ketals Patent #: 4447648
Issued on: 05/08/1984
Inventor: Wegman

Inventors

Application

No. 06/732487 filed on 05/10/1985

US Classes:

560/240, Preparing esters from ethers554/128, Carbonylation, carbonation, or hydroformylation554/227, Plural oxy groups in the alcohol moiety (e.g., triglycerides, ethylene glycol monostearate, 2-methoxy ethyl laurate, etc.)560/1, Carboxylic acid esters560/112, Polyoxy alcohol moiety560/122, Cyclopentyl-COOR, -C-COOR or -C-C-COOR560/123, Cyclobutyl in acid moiety560/125, Alicyclic acid moiety containing N, S, P, B or halogen560/126, Alicyclic acid moiety containing oxy, aldehyde or ketone group560/134, Ortho fused560/179, Oxy in acid moiety560/8, Aromatic acid moiety564/132, Preparing directly from carbon monoxide or carbon dioxide568/420, Aldehydes568/428, Carbon monoxide reactant (e.g., carbonylation, etc.)568/484, Reactant contains -COO- group568/607, Benzene ring containing568/622, Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal)568/625, Plural diverse oxyalkylene groups containing568/662, Polyoxy568/670Alicyclic ring and polyoxy containing

Examiners

Primary: Lone, Werren B.

Attorney, Agent or Firm

Millen & White

International Classes

C07C 41/00 (20060101)
C07C 45/00 (20060101)
C07C 41/30 (20060101)
C07C 45/49 (20060101)

Foreign Application Priority Data

1984-05-11 FR

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 H2 /CO ranging from 1:1 to 3:1 and preferentially 2-alkoxy aldehydes, for a ratio H2 /CO ranging from 0.1:1 to 0.5:1.