2-Oxo-2<i>H</i>-chromen-7-yl 3-methylbutanoate
The title compound, C<sub>14</sub>H<sub>14</sub>O<sub>4</sub>, was synthesized by <i>O</i>-acyl-ation of umbelliferone with isovaleryl chloride in the presence of diethyl ether as a solvent and pyridine as a base. The side chain moiety <i>i.e.</i> the acetate fragment linking to the methyl-ethyl group is almost orthogonal to the almost planar (r.m.s deviation = 0.020 Å) coumarin ring system, making an angle of 76.26 (7)°. In the crystal, the mol-ecules form centrosymmetric dimers through pairwise C-H⋯O hydrogen bonds, generating <i>R</i> <sub>2</sub> <sup>2</sup>(8) and <i>R</i> <sub>2</sub> <sup>2</sup>(18) loops that lie within the crystallographic <i>ac</i> plane and propagate along the [001] direction.
Authors
- Akoun Abou (ORCID: https://orcid.org/0000-0001-6902-1027)
- Ludovic Akonan (ORCID: https://orcid.org/0000-0003-1166-1050)
- Abdoulaye Djandé (ORCID: https://orcid.org/0009-0008-1926-0773)
- Pierre Francotte (ORCID: https://orcid.org/0000-0001-9252-7798)
- Hypolite Bazié (ORCID: https://orcid.org/0009-0008-6132-4398)
Institutions
- Université Joseph Ki-Zerbo (BF)
- University of Liège (BE)
- Université Nangui Abrogoua (CI)
- Institut National Polytechnique Félix Houphouët-Boigny (CI)
Publication Details
- Journal
- IUCrData
- Published
- 2025-02-28
- DOI
- https://doi.org/10.1107/s2414314625001610
- Primary Topic
- Synthesis of Organic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.00