Dimethyl 2,6-dimethyl-1,4-dihydro-pyridine-3,5-dicarboxyl-ate

Abstract

In the crystal of the title compound, C11H15NO4, the mol-ecules are linked into sheets by N- H⋯O and C- H⋯O hydrogen bonds. Within the mol-ecule, the 1,4-dihydro-pyridine ring exhibits a distinctive planar conformation [r.m.s. deviation from the mean plane of 0.009 (3)Å], and the other non-H atoms are almost coplanar [r.m.s. deviation = 0.021 (3) Å] with the 1,4-dihydro-pyridine ring. The conformation of the latter is governed mainly by two intra-molecular C- H⋯O non-classical inter-actions.