PROCESS FOR PRODUCING 1, 4-BUTANEDIAL

摘要

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 carbonyl 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.