Thermal [4 + 2] Cycloadditions of 3-Acetyl-, 3-Carbamoyl-, and 3-Ethoxycarbonyl-Coumarins with 2,3-Dimethyl-1,3-butadiene under Solventless Conditions: A Structural Study

The thermal [4+2] cycloadditions of 3-acetyl-, 3-carbamoyl, and 3-ethoxy-carbonylcoumarins with 2,3-dimethyl-1,3-butadiene under solvent free conditions are reported, as well as the epoxidation reactions of some adducts. Discussion is focused on the structural features of the Diels-Alder adducts and...

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Detalles Bibliográficos
Autores principales: Flores-Larios, Irma Y., López-Garrido, Lizbeth, Martínez-Martínez, Francisco J., González, Jorge, García-Báez, Efrén V., Cruz, Alejandro, Padilla-Martínez, Itzia I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International 2010
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6257233/
https://www.ncbi.nlm.nih.gov/pubmed/20335998
http://dx.doi.org/10.3390/molecules15031513
Descripción
Sumario:The thermal [4+2] cycloadditions of 3-acetyl-, 3-carbamoyl, and 3-ethoxy-carbonylcoumarins with 2,3-dimethyl-1,3-butadiene under solvent free conditions are reported, as well as the epoxidation reactions of some adducts. Discussion is focused on the structural features of the Diels-Alder adducts and their epoxides, based upon NMR, X-ray, and mass spectral data, and supported by ab initio theoretical calculations.

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