Sodium Chromate → 4-(3,5-Dichlorophenylmethyl)cyclohexanone

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A solution of chromic acid was prepared using 5.6 grams of sodium dichromate, 16.8 mL of water, 4.1 mL of concentrated sulfuric acid, and additional water to provide 28 mL of solution. The sodium chromate solution was cooled to 0° C. and was added dropwise to a stirred, cold (0° C.) solution of 7.3 grams (0.028 mole) of 4-(3,5-dichlorophenylmethyl)cyclohexanol in 15 mL of diethyl ether. The complete addition required about 5 minutes. Upon completion of addition, the reaction mixture was stirred for 5 minutes and then was extracted with diethyl ether. The ether extract was washed with an aqueous solution saturated with sodium bicarbonate, then with water. The organic layer was concentrated under reduced pressure, yielding 2.6 grams of 4-(3,5-dichlorophenylmethyl)cyclohexanone.

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