Synthesis of Novel Isoxazoline/Isoxzolyl Pyrano Heterocyclic Annulated Flavones
作者:Rachakonda Sydhulua、Yerrabelly Hemasria
DOI:10.14233/ajchem.2023.27286
日期:——
The synthesis of newisoxazoline/isoxazolepyrano fused flavone derivatives from 6-hydroxy 5-formyl flavone via in situ generation of nitrileoxide from aldoxime using ceric ammonium nitrate (CAN) as an oxidant followed by intramolecularcycloaddition reaction at olefin/alkyne functions is reported in high yields. The reaction involves regio selective annulation at C5/C6 position in preference to the