Ethyl 2,6-bis­(4-chloro­phen­yl)-1-iso­cyano-4-oxo­cyclo­hexa­necarboxyl­ate

In the title compound, C₂₂H₁₉Cl₂NO₃, the central six-membered ring is in a twist-boat conformation. The two aryl groups are in equatorial positions, trans to each other and with a dihedral angle of 77.50 (2)° between them. One of the least hindered –CH₂– groups and one of the aryl-substituted C atoms, with its axial H atom, are in the flagpole positions. The eth­oxy­carbonyl group is in an equatorial position and is cis to the second aryl group. In the crystal, molecules are linked via weak C—H...O hydrogen bonds, forming chains along [010].