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US Patent 4691048 - Process for reducing carbonylation of aldehydes, uses as hemiacetalesters, catalyzed by cobalt carbonyl complexes
US Patent Issued on September 1, 1987
Estimated Patent Expiration Date:
May 10, 2005Estimated 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.
Estimated Patent Expiration Date:
May 10, 2005Estimated 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.AbstractThe 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. | InventorsApplicationNo. 06/732487 filed on 05/10/1985US 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 containingField of Search560/263, Acyclic polyoxy alcohol moiety560/55, Oxy in acid moiety560/106, Ring in alcohol moiety560/105, Carboxyl, not bonded directly to a ring, in acid moiety560/19, Nitrogen in acid moiety other than as nitroso or isocyanate (e.g., amino acid esters, etc.)560/1, Carboxylic acid esters560/8, Aromatic acid moiety560/240, Preparing esters from ethers560/112, Polyoxy alcohol moiety560/179Oxy in acid moietyExaminersPrimary: Lone, Werren B.Attorney, Agent or FirmUS Patent References4168391, Production of ethanol from methanolIssued on: 09/18/1979 Inventor: Slinkard , et al.4431835, Hydrocarbonylation/carbonylation of alkyl carboxylates Issued on: 02/14/1984 Inventor: Gauthier-Lafaye , et al.4447648Process for making aldehydes from ketals Issued on: 05/08/1984 Inventor: Wegman International ClassesC07C 41/00 (20060101)C07C 45/00 (20060101) C07C 41/30 (20060101) C07C 45/49 (20060101) Foreign Application Priority Data1984-05-11 FR |
