Crystal structure of 3-methoxycarbonyl-2-(4-methoxyphenyl)-8-oxo-1-azaspiro[4.5]deca-1,6,9-trien-1-ium-1-olate

The title compound, C 18 H 17 NO 5 , was prepared by a synthetic strategy based on the Heck reaction from Morita–Baylis–Hillman adducts. The five-membered ring adopts a slightly twisted conformation on the C a —C m (a = aromatic and m = methylene) bond. The dihedral angle between the five-membered r...

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Published inActa crystallographica. Section E, Structure reports online Vol. 70; no. 11; pp. o1200 - o1201
Main Authors Martins, Lucimara Julio, Simoni, Deborah de Alencar, Aparicio, Ricardo, Coelho, Fernando
Format Journal Article
LanguageEnglish
Published International Union of Crystallography 01.11.2014
Subjects
Morita–Baylis–Hillman aducts
single-crystal X-ray study
spirohexadienone structure
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Summary:The title compound, C 18 H 17 NO 5 , was prepared by a synthetic strategy based on the Heck reaction from Morita–Baylis–Hillman adducts. The five-membered ring adopts a slightly twisted conformation on the C a —C m (a = aromatic and m = methylene) bond. The dihedral angle between the five-membered ring and the spiro aromatic ring is 89.35 (7)°; that between the five-membered ring and the 4-methoxybenzene ring is 4.65 (7)°. Two short intramolecular C—H...O contacts occur. In the crystal, molecules are linked by C—H...O hydrogen bonds to generate a three-dimensional network.
ISSN:1600-5368
1600-5368
DOI:10.1107/S1600536814023277