| abstract |
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. |