A new strategy for synthesis of 9-benzoyl-4-methylpyrano[2,3-f]chromene-2,8-dione using L-proline as a novel and efficient catalyst
- Autores: Goud E.1, Rao Y.1, Hemasri Y.2, Thirupathi G.1
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Afiliações:
- Department of Chemistry
- Department of Chemistry, Nizam College
- Edição: Volume 86, Nº 12 (2016)
- Páginas: 2732-2736
- Seção: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/216849
- DOI: https://doi.org/10.1134/S1070363216120331
- ID: 216849
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Resumo
We report the high yield synthesis of novel 9-benzoyl-4-methylpyrano[2,3-f]chromene-2,8-dione derivatives obtained by the reaction of 8-formyl-7-hydroxy-4-methylcoumarin with various active methylene compounds. A mechanism of the tandem Knoevenagel condensation and cyclisation reaction is proposed. Structures of all compounds were elucidated on the basis of 1H and 13C NMR, and mass spectrometry, and elemental analysis.
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Sobre autores
E. Goud
Department of Chemistry
Email: erukalayadaiahgoud@gmail.com
Índia, Hyderabad, Telangana, 500007
Y. Rao
Department of Chemistry; Department of Chemistry
Autor responsável pela correspondência
Email: erukalayadaiahgoud@gmail.com
Índia, Hyderabad, Telangana, 500007; Nizamabad, 503322
Y. Hemasri
Department of Chemistry, Nizam College
Email: erukalayadaiahgoud@gmail.com
Índia, Hyderabad, 500001
G. Thirupathi
Department of Chemistry
Email: erukalayadaiahgoud@gmail.com
Índia, Hyderabad, Telangana, 500007