Propanal → 2-Methyl-2-pentenal

Participants

Reaction Steps

Using a feed of 2.5 liters of propionaldehyde per hour, corresponding to a mean residence time of about 1.2 hours, a propionaldehyde conversion of 38% was achieved at 130° C. under a hydrogen pressure of 25 bar. The yield of 2-methylpentanal, based on the material converted, was 83%. In addition, 3% of propanol, 5% of a mixture of 2,4-dimethylhepta-2,4-dienal and 2,4-dimethylhept-2-enal, 0.5% of 2-methylpentanol and 4% of 2-methylpent-2-enal were formed. Since the last-mentioned compound can, if recycled to the synthesis, also be converted into 2-methylpentanal, the total yield of useful products was 87%.

Provenance & Evidence