@article{Sydhulua_Hemasria_2023, title={Synthesis of Novel Isoxazoline/Isoxzolyl Pyrano Heterocyclic Annulated Flavones}, volume={35}, url={https://asianpubs.org/index.php/ajchem/article/view/35_3_15}, DOI={10.14233/ajchem.2023.27286}, abstractNote={<p style="text-align: justify;">The synthesis of new isoxazoline/isoxazole pyrano fused flavone derivatives from 6-hydroxy 5-formyl flavone <em>via in situ</em> generation of nitrile oxide from aldoxime using ceric ammonium nitrate (CAN) as an oxidant followed by intramolecular cycloaddition reaction at olefin/alkyne functions is reported in high yields. The reaction involves regio selective annulation at C<sub>5</sub>/C<sub>6</sub> position in preference to the C<sub>6</sub>/C<sub>7</sub> position of flavones. All the synthesized compounds were successfully characterized by IR, <sup>1</sup>H NMR, <sup>13</sup>C NMR and ESI-MS.</p>}, number={3}, journal={Asian Journal of Chemistry}, author={Sydhulua, Rachakonda and Hemasria, Yerrabelly}, year={2023}, month={Feb.}, pages={624–628} }