Process for producing 1, 4-butanedial

Details Process for producing 1, 4-butanedial Process for producing 1, 4-butanedial

C - Chemistry, Metallurgy

07

C

260/570.1

C07C 47/12 (2006.01) C07C 41/56 (2006.01) C07C 45/49 (2006.01) C07C 45/51 (2006.01)

Patent

CA 1265533

ABSTRACT OF THE DISCLOSURE Acrolein is used as the starting product for 1,4-bu- tanedial (succindialdehyde). The acrolein is converted with an alkanol into a 3,3-dialkoxy-1-propene, which is hydroformylated in the presence of hydridotris-triphenyl-phosphine rhodium car- bonyl and triphenyl phosphine or triphenyl phosphite as the catalyst. The 2,4-dialkoxy butanal thus formed is separated from the hydroformylation product by distillation and hydrolyzed to the 1,4-butanedial.

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