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Acta Cryst. (2009). E65, o649  [ doi:10.1107/S1600536809001524 ]

4-Tosyl-1-oxa-4-azaspiro[4.5]deca-6,9-dien-8-one

P. Yin, W.-W. Zhang, H.-B. Yin, L. He and W.-C. Huang

Abstract: In the molecule of the title compound, C15H15NO4S, the two six-membered rings are almost parallel to each other [dihedral angle = 1.87 (9)°] and perpendicular to the mean plane through the five-membered ring [dihedral angles of 89.98 (10) and 89.04 (10)°]. The crystal structure is stabilized by intermolecular C-H...O hydrogen-bonding interactions.

Online 28 February 2009


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