1,4-Dioxane → (Z)-2,6-dimethyloct-2-ene-1,8-diol

Participants

Reaction Steps

1 mole of 7-chloro-3,7-dimethyl-3-octenyl acetate was dissolved into 200 milliliters of dioxane and the solution was subjected to hydrogenation reaction in a reactor containing 20 grams of activated palladium black at about 25° C. under normal pressure until hydrogen was no more absorbed. Then, the palladium black was filtered off from the reaction mixture, and dioxane was distilled off from the filtrate. To the resulting residue were added 50 milliliters of water, 200 milliliters of acetone and 10 grams of silver oxide, and the mixture was heated under reflux for 72 hours. After filtrating off precipitate contained in the reaction mixture, acetone and water were distilled off from the filtrate. By distillation of the residual liquid a fraction boiling in the temperature range of 135°-145° C./4.0mmHg was collected, whereby 0.6 mole of hydroxycitronellol was obtained.

Provenance & Evidence