Synthesis and crystal structure of 5,5-dimethyl-2-(4-chlorophenyl)(3-hydroxy-5,5-dimethyl-2-cyclohexen-1-one-2-yl)methyl-3-(4-methoxyphenylamino)-2-cyclohexene-1-one

The title compound 5,5-dimethyl-2-(4-chlorophenyl)(3-hydroxy-5,5-dimethyl-2- cyclohexen-1-one-2-yl)methyl-3-(4-methoxyphenylamino)-2-cyclohexen-1-one has been synthesized, and its crystal structure was characterized by X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P2(1)/c with a = 9.4193(13), b 26.915(4), c = 21.188(3) angstrom, beta = 101.906(3)degrees, V = 5256.2(13) angstrom(3), Z = 4, C60H68Cl2N2O8, M-r = 10 16.06, D-c = 1.284 g/cm(3) F(000) = 2160, lambda(MoK alpha) = 0.71073 angstrom, mu = 0. 182 mm(-1), R = 0.0530 and wR = 0.1131 for 4128 observed reflections (I> 2 sigma(1)). X-ray analysis reveals that there are two independent molecules in the unit and the cyclohexenone rings adopt different conformations. In addition, there are four intramolecular hydrogen bonds in the title molecule.