[OH-].[K+].[C:3]([CH:6]1[CH2:11][CH2:10][CH2:9][C:8]([CH3:13])([CH3:12])[CH2:7]1)(=[O:5])[CH3:4].C1OCCOC2C(=CC=CC=2)OCCOCCOC2C(=CC=CC=2)OC1.[CH2:40](Cl)[C:41](=[CH2:43])[CH3:42]>O.C1(C)C=CC=CC=1>[C:3]([CH:6]1[CH2:11][CH2:10][CH2:9][C:8]([CH3:13])([CH3:12])[CH2:7]1)(=[O:5])[CH3:4].[C:3]([C:6]1([CH2:42][C:41]([CH3:43])=[CH2:40])[CH2:11][CH2:10][CH2:9][C:8]([CH3:13])([CH3:12])[CH2:7]1)(=[O:5])[CH3:4]A slurry of potassium hydroxide (84 grams, 1.5 moles), 1-acetyl-3,3,-dimethylcyclohexane (156 grams, 1 mole), dibenzo-18-crown-6 (3 grams) having the structure: ##STR19## produced by the Aldrich Chemical Company of Metuchen, New Jersey, and toluene (150 ml) is heated to reflux whereupon the reaction mass thickens. The mass is cooled to 70° C., and methallyl chloride (135 grams, 1.5 moles) is added thereto rendering the reaction mixture more fluid. The reaction mixture is heated at reflux for an additional 9 hours whereupon the mass is cooled, and water is added. The aqueous layer is decanted and the organic layer is distilled to afford 1-acetyl-3,3-dimethylcyclohexane (62 gm) and 1-acetyl-3,3-dimethyl-1-(2-methyl-2-propenyl) cyclohexane (83 gm, NMR spectrum, FIG. 1; IR spectrum, FIG. 2).
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