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
- Authors: Goud E.Y.1, Rao Y.J.1, Hemasri Y.2, Thirupathi G.1
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Affiliations:
- Department of Chemistry
- Department of Chemistry, Nizam College
- Issue: Vol 86, No 12 (2016)
- Pages: 2732-2736
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/216849
- DOI: https://doi.org/10.1134/S1070363216120331
- ID: 216849
Cite item
Abstract
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.
About the authors
E. Y. Goud
Department of Chemistry
Email: erukalayadaiahgoud@gmail.com
India, Hyderabad, Telangana, 500007
Y. J. Rao
Department of Chemistry; Department of Chemistry
Author for correspondence.
Email: erukalayadaiahgoud@gmail.com
India, Hyderabad, Telangana, 500007; Nizamabad, 503322
Y. Hemasri
Department of Chemistry, Nizam College
Email: erukalayadaiahgoud@gmail.com
India, Hyderabad, 500001
G. Thirupathi
Department of Chemistry
Email: erukalayadaiahgoud@gmail.com
India, Hyderabad, Telangana, 500007