Received 10 December 2011
In the title compound, C16H21N3O3, the piperazine ring adopts a chair conformation, with its N-C bonds in pseudo-equatorial orientations. In the crystal, molecules are linked by O-HN hydrogen bonds, generating C(5) chains propagating in . Weak aromatic - stacking interactions also occur [centroid-centroid separation = 3.899 (1) Å].
Data collection: APEX2 (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; 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: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB6564 ).
We gratefully acknowledge the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) and Changzhou University (ZMF10020010) for financial support.
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