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Ethyl 2-[(Z)-3-chloro-benzyl-idene]-7-methyl-3-oxo-5-phenyl-2,3-dihydro-5H-1,3-thia-zolo[3,2-a]pyrimidine-6-carboxyl-ate. 2008

Mukesh M Jotani, and Bharat B Baldaniya

In the title compound, C(23)H(19)ClN(2)O(3)S, the central pyrimidine ring is significantly puckered, assuming almost a screw boat conformation. In addition to the usual inter-molecular C-H⋯O hydrogen bonding, short intra-molecular C-H⋯S contacts and π-π stacking inter-actions [centroid-centroid distance = 3.762 (2) Å] contribute to the crystal packing.

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