Synthesis of flavans: One-pot synthesis of flavans from 4- methylcoumarins

Article abstract of DOI:10.1080/00397919808004523

4-Methylcoumarins (2), obtained by condensation of suitable phenols (1) with ethyl acetoacetate in the presence of sulfuric acid, lead directly to flavans (3) when refluxed with sodium hydroxide and ethanediol.

Full text of DOI:10.1080/00397919808004523

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Synthesis of Flavans :One-
Pot Synthesis of Flavans
From 4-Methylcoumarins
Vijayendra P. Kamat a , Ratnakar N. Asolkar a
Janardan K. Kirtany a
&
a Department of Chemistry , Goa University ,
Taleigao Plateau, Goa, 403206, India
Published online: 22 Aug 2006.
To cite this article: Vijayendra P. Kamat , Ratnakar N. Asolkar & Janardan
K. Kirtany (1998) Synthesis of Flavans :One-Pot Synthesis of Flavans From 4-
Methylcoumarins, Synthetic Communications: An International Journal for
Rapid Communication of Synthetic Organic Chemistry, 28:24, 4581-4587, DOI:
10.1080/00397919808004523
To link to this article: http://dx.doi.org/10.1080/00397919808004523
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