Synthesis of 7-hydroxydibenzopyran-6-ones via benzannulation of coumarins

We have successfully demonstrated a facile synthesis of a variety of 7-hydroxydibenzopyran-6-ones via a two-step protocol from 3-acylcoumarins having a latent Nazarov dienone functionality. Condensation of 3-acylcoumarins and ethyl cyanoacetate under basic (wet K 2 CO 3 ) and microwave irradiation c...

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Veröffentlicht in:	Organic & biomolecular chemistry 2022-08, Vol.20 (34), p.6905-6914
Hauptverfasser:	Surya Prakash Rao, H., Prabakaran, M., Muthanna, Nandurka
Format:	Artikel
Sprache:	eng
Schlagworte:	Irradiation Isomers Palladium Potassium carbonate Substitutes Synthesis
Online-Zugang:	Volltext
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