2,4-Bis(2-methylphenyl)-3-azabicyclo[3.3.1]nonan-9-one O-methyloxime

The molecule of the title compound, C23H28N2O, exists in a twin-chair conformation, with equatorial orientation of the ortho-tolyl groups on both sides of the secondary amino group. The title oxime compound and its ketone precursor 2,4-bis(2-methylphenyl)-3-azabicyclo[3.3.1]nonan-9-one exhibit similar stereochemistries, with the orientation of the o-tolyl rings almost identical in both compounds. In the title compound, the tolyl rings are at an angle of 23.77 (3)degrees with respect to one another; the angle in the precursor is 29.4 (1)degrees [Vijayalakshmi, Parthasarathi, Venkatraj & Jeyaraman (2000), Acta Cryst. C56, 1240-1241]. The cyclohexane ring and the oxime ether are disordered over two alternative orientations, with a refined site-occupancy ratio of 0.813 (2):0.186 (4). The crystal structure of the title compound is stabilized by intermolecular N-H center dot center dot center dot pi interactions.