Cyclohexanone → Methyl cis-4-(1,3-pentadienyl)-1,5-dioxaspiro[5.5]undecane-2-acetate

Participants

Reaction Steps

Methyl 3,5-dihydroxy-6,8-decadienoate (7.6 g, 35.5 mmol) and p-toluenesulfonic acid (0.1 g) was added to cyclohexanone (10 g, 100 mmol) and stirred for 16 hours at ambient temperature. The yellow solution was loaded directly onto a silica gel column and the product eluted with diethyl ether:hexane (1:4). The appropriate fractions were combined to give 3.52 g (33.6%) of the title compound as a colorless oil.

Provenance & Evidence