The title compound, C(15)H(22)N(2)O(3), has been isolated as a by-product of an oxidative cleavage of the C-C bond linking two five-membered rings of 1,3-dicyclohexyl-5-(3-oxo-2,3-dihydrobenzofuran-2-yl)imidazolidine-2,4-dione. Individual molecular units are engaged in weak C=O center dot center dot center dot C=O interactions [O center dot center dot center dot C = 2.814 (10) and 2.871 (11) angstrom], leading to the formation of supramolecular chains which close pack, mediated by van der Waals contacts, in the bc plane.



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Talhi, O; Fernandes, JA; Pinto, DCGA; Silva, AMS; Paz, FAA

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We are grateful to the Fundacao para a Ciencia e a Tecnologia (FCT/FEDER, Portugal) for their general financial support to QOPNA and CICECO, and for post-doctoral research grant No. SFRH/BPD/63736/2009 (to JAF). We also thank the (European Community's) Seventh Framework Programme (FP7/2007-20139 under grant agreement No. 215009). Thanks are also due to the FCT for specific funding toward the purchase of the single-crystal diffractometer.

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