5-[(3,4-Dimethoxy­benzyl)­aminomethyl­ene]-2,2-dimethyl-1,3-dioxane-4,6-dione

The title compound, C(15)H(17)NO(6), is approximately planar, with dihedral angles of 3.11 (4) and 2.12 (4)° between the connecting amino­methyl­ene unit and the planar part of the dioxane ring, and between the dimethoxy­benzyl ring and the amino­methyl­ene group, respectively. The dioxane ring exhibits a half-boat conformation, in which the C atom between the dioxane O atoms is 0.5471 (8) Å out of the plane. The mol­ecule has an intra­molecular N—H⋯O hydrogen bond which may stabilize the planar conformation. In the crystal, weak inter­molecular C—H⋯O hydrogen-bonding contacts, result in the formation of sheets parallel to the ab plane.