Abstract Using a suitable hydrocarbon solvent such as hexane, continuous extraction of an aqueous solution of 1, 4-cyclohexanedione containing 2, 2-dimethyl-1, 3-propanediol in molar excess and sulfuric acid as a catalyst afforded 1, 4-cyclohexanedione mono-2, 2- dimethyltrimethylene ketal (1b) in 85% yield.
