In the title compound, C23H20ClN3O, each of the cyclohexene and 1,4-dihydropyridine rings of the 1,4,5,6,7,8-hexahydroquinoline ring system adopts a twisted-boat conformation. The dihedral angle between the two benzene rings is 11.52 (7). In the crystal, molecules are linked through a pair of amino–nitrile N—HN hydrogen bonds, forming inversion dimers. These assemble into a three-dimensional network via C—HO and C—H interactions. ... Read more