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[Contents scheme]

Acta Cryst. (2013). E69, o541
[ doi:10.1107/S1600536813006739 ]

Ethyl 4-(5-bromo-2-hydroxyphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate

M. M. Kurbanova, E. Z. Huseynov, A. V. Gurbanov, A. M. Maharramov and R. Kia

Abstract: In the title compound, C21H24BrNO4, the dihedral angle between the heterocyclic ring and the pendant aromatic ring is 80.20 (13)°. The hexahydroquinone [i.e. the one with the C=O group] ring adopts a sofa conformation. An intramolecular O-H...O hydrogen bond generates an S(6) ring motif. The ethyl group is disordered over two sets of sites with a refined site occupancy ratio of 0.633 (10):0.366 (10). In the crystal, molecules are linked by N-H...O interactions, forming chains parallel to [101]. There are no significant C-H...[pi] or [pi]-[pi] interactions in the crystal structure.


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