Dimethyl 6-acetyl-2-methyl-1,2-dihydroquinoline-2,4-dicarboxyl­ate

In the title compound, C₁₆H₁₇NO₅, the dihydro­pyridine ring adopts a sofa conformation. In the crystal, inter­molecular N—H...O hydrogen bonds link the mol­ecules into chains running along the b axis.

Dimethyl 6-bromo-2-methyl-1,2-di­hydro­quinoline-2,4-dicarboxyl­ate

In the title compound, C₁₄H₁₄BrNO₄, the dihydro­pyridine ring adopts a screw-boat conformation. In the crystal, pairs of N—H...O hydrogen bonds link the mol­ecules into inversion R₂²(10) dimers.