Ethyl 6-(4-bromophenyl)-4-(4-fluorophenyl)-2-oxocyclohex-3-ene-1-carboxylate

There are two independent molecules in the asymmetric unit of the title compound, C21H18BrFO3, in which the dihedral angles between the fluorophenyl and bromophenyl groups are 77.0 (1) and 85.8 (1)degrees. In one of the molecules, two methine C-H groups of the cyclohexene ring are disordered over two sets of sites in a 0.53 (2): 0.47 (2) ratio. In both molecules, the atoms of the ethyl group were refined as disordered over two sets of sites with occupancies of 0.67 (2): 0.33 (2) and 0.63 (4): 0.37 (4). The cyclohexene rings have slightly distorted sofa conformations in both molecules. In the crystal, C-H center dot center dot center dot O interactions link molecules into chains along the b axis.