3-Methyl-2-buten-1-OL → 3,7-Dimethylocta-2,6-Dienal

Participants

Reaction Conditions

Reaction Steps

Air is blown for five minutes through a mixture of 100 parts of 3-methyl-2-buten-1-ol (prenol) and 100 parts of 3,3-dimethylacrolein. The reaction mixture containing peroxide is then heated for six hours at 140° C. The water formed in the reaction is removed continuously by injecting pentane into the reaction chamber. The reaction product is worked up by distillation. 59.2 parts of citral having a boiling point of 103° to 106° C. at 12 mm is obtained, equivalent to a yield of 76% of theory based on 3,3-dimethylacrolein at a conversion of 43%.

Provenance & Evidence