Hydroformylation process

Details Hydroformylation process Hydroformylation process

C - Chemistry, Metallurgy

07

C

C07C 45/49 (2006.01) C07C 47/19 (2006.01) C07F 9/655 (2006.01)

Patent

CA 2665911

A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of a solvent and a catalyst system comprising a rhodium complex and a 2,3-O-isopropylidene-2,3-dihydroxy-1,4-bis[bis(3,5-di-n-alkylphenyl)phosphino]butane. The process gives high yield of 4-hydroxybutyraldehyde compared to 3-hydroxy-2-methylpropionaldehyde.

L'invention concerne un procédé pour la production de 4-hydroxybutyraldéhyde. Le procédé comporte la réaction d'alcool allylique avec un mélange d'oxyde de carbone et d'hydrogène en présence d'un solvant ; et un système catalyseur comprenant un complexe de rhodium et du 2,3-O-isopropylidène-2,3-dihydroxy-1,4-bis[bis(3,5-di-n-alkylphényl)phosphino]butane. Le procédé offre un rendement élevé de 4-hydroxybutyraldéhyde par rapport au 3-hydroxy-2-méthylpropionaldéhyde.

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