p-Toluenesulfonic acid → 2-Methyl-4,4-bis[(3-methylbut-2-en-1-yl)oxy]but-1-ene

Participants

Reaction Steps

2.67 parts of 3-methylbutenal, 5.5 parts of pulenol, 0.001 part of p-toluenesulfonic acid, and 20 vol. parts of benzene were charged to the same rectification column employed in Example 53, and reacted at 90° C. for 2 hours, while the volume of the system was maintained constant by feeding 10 vol. parts of fresh benzene per hour and distilling 10 vol. parts per hour of the water-containing benzene off from the system. Thus 100% of 3-methyl-3-butenal-1 was converted and 3-methyl-3-butenal-1-dipulenylacetal was obtained with the selectivity of 80.2%.

Provenance & Evidence