Received 16 March 2013
aCollege of Chemistry and Chemical Engineering, Jiang Xi Normal University, Nanchang, Jiang Xi 330022, People's Republic of China, and bBeijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
Correspondence e-mail: email@example.com
The asymmetric unit of the title compound, C19H19N3O4, contains two molecules with very few conformational differences; a C atom in the pyrimidine ring in one of the molecules is disordered in a 0.688 (15):0.312 (15) ratio. In both molecules, the fused pyridine and pyrimidine rings adopt half-chair conformations. The dihedral angles between the furan and benzene rings are 81.00 (13) and 84.99 (10)° in the two molecules. The molecular structure is consolidated by intramolecular N-HO hydrogen bonding. In the crystal, C-HO hydrogen bonds connect the molecules into a three-dimensional network.
For background to heterocyclic ketene aminals, see: Yaqub et al. (2008); Huang & Wang (1994); Yu et al. (2006); For the crystal structure of a related compound, see: Yu et al. (2007).
Data collection: RAPID-AUTO (Rigaku, 2001); cell refinement: RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELX97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PV2626 ).
We thank Tongling Liang and Xiang Hao at the Chinese Academy of Sciences for the X-ray crystallographic determination.
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