Dehydroformylation of acetoxybutyraldehydes

Details Dehydroformylation of acetoxybutyraldehydes Dehydroformylation of acetoxybutyraldehydes

C - Chemistry, Metallurgy

07

C

260/635.1, 260/4

C07C 67/28 (2006.01) C07C 29/00 (2006.01)

Patent

CA 1048533

ABSTRACT OF THE DISCLOSURE Dehydroformylation of isomeric acetoxybutyraldehydes, with minimal dehydroacetoxylation, can be accomplished at a temperature in the range of 120-250° C. in a nonoxidizing atmosphere in the presence of an essentially neutral noble metal catalyst to produce allyl acetate, 1-propenyl acetate or mixtures thereof. This reaction permits recycle of the undesired isomeric acetoxybutyraldehyde products of the hydroformylation of allyl acetate or 1-propenyl acetate to the desired 4-acetoxybutyraldehyde which is an intermediate in the production of 1,4-butanediol useful in making polyesters.

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