Water → 1,2,3,3,6,6-Hexamethylcyclohex-1-ene

Participants

Reaction Steps

25.9 g of 1-hydroxy-1,2,2,5,5,6-hexamethylcyclohexane are dissolved in 600 ml of benzene and, after the addition of a spatula tip of p-toluenesulphonic acid, held at boiling temperature on a water separator for 3 hours. The mixture is cooled, treated with sodium carbonate, stirred briefly, filtered and the benzene is distilled off at normal pressure. Distillation of the residue gives 21 g of 1,2,3,3,6,6-hexamethyl-1-cyclohexene as a colourless liquid of boiling point 65°-67° C./10 mm Hg.

Provenance & Evidence