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Acta Cryst. (2013). E69, o785
[ doi:10.1107/S1600536813009951 ]

Diethyl 4-(2-methoxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

K. Wang, Y. Wang, M. Yao and D. Xu

Abstract: In the title compound, C20H25NO5, the dihydropyridine ring adopts a flattened boat conformation. The methoxyphenyl ring is almost perpendicular to the mean plane of the pyridine ring [dihedral angle = 88.42 (3)°]. The two carbonyl units adopt a synperiplanar conformation with respect to the double bonds in the dihydropyridine ring. In the crystal, molecules are connected by N-H...O hydrogen bonds into R44(24) tetrameric rings. A region of disordered electron density, located at the center of four adjacent molecules, was treated with the SQUEEZE routine in PLATON [Spek (2009). Acta Cryst. D65, 148-155]. It is probably the result of traces of the solvent of crystallization and was not taken into account during the structure refinement.

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