Acta Cryst. (2009). E65, o2576  [ doi:10.1107/S1600536809038458 ]

2,2-Dimethyl-5-(2-naphthylaminomethylene)-1,3-dioxane-4,6-dione

R. Li and Z.-Y. Ding

Abstract: There are two unique molecules in the asymmetric unit of the title compound, C₁₇H₁₅NO₄, which are linked into chains via intermolecular N-HO and C-HO interactions; the chains are linked via weak C-HO interactions, forming a parallel sheet structure. The molecule is approximately planar, with dihedral angles of 19.91 (4) and 11.06 (4)° between the naphthyl ring and the aminomethylene group, and between the aminomethylene unit and the planar part of the dioxane ring, respectively. The dioxane ring adopts a half-boat conformation, with the C atom between the dioxane O atoms 0.595 (8) Å out of the plane through the remaining atoms. The molecule has an intramolecular N-HO hydrogen bond which stabilizes the planar conformation.

Online 30 September 2009

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