10-(4-Chloro­phen­yl)-9-(4-fluoro­phen­yl)-3,3,6,6-tetra­methyl-3,4,6,7,9,10-hexa­hydro­acridine-1,8(2H,5H)-dione

The title compound, C(29)H(29)ClFNO(2), was synthesized by the reaction of 4-fluoro­benzaldehyde, 5,5-dimethyl­cyclo­hexane-1,3-dione and 3-(4-chloro­phenyl­amino)-5,5-dimethyl­cyclo­hex-2-enone in an ionic liquid (1-butyl-3-methyl­imidazolium bromide). X-ray analysis reveals that the 1,4-dihydro­pyridine ring adopts a boat conformation, while each of the attached partially saturated six-membered rings adopts a half-chair conformation. The structure is stabilized by weak C—H⋯O and C—H⋯F hydrogen bonds. The mol­ecule has approximate mirror symmetry; the largest deviation from this symmetry concerns the fluoro- and chloro­phenyl rings.