Diethyl 4-[5-(4-chlorophenyl)-1H-pyrazol-4-yl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

Abstract

In the title compound, C22H24ClN3O4, intramolecular C—H...O and C—H...N hydrogen bonds form S(9) and S(7) ring motifs, respectively. The 1,4-dihydropyridine ring adopts a flattened boat conformation. The benzene ring makes a dihedral angle of 33.36 (6)° with the pyrazole ring. In the crystal, pairs of N—H...N hydrogen bonds link the molecules into inversion dimers. The dimers are stacked in column along the a axis through N—H...O and C—H...N hydrogen bonds. The crystal packing also features C—H...π interactions involving the pyrazole ring.