Cyclohexanone-2,4,4,6-tetramethyl ester

The title compound, C 14 H 18 O 9 , was isolated as a minor by-product (2.6%) from the benzene mother liquors of a preparation of Meerwein's ester. The molecule is present in the crystal in the enol configuration with the cyclohexene ring adopting a half-chair conformation.