Sodium Perborate Tetrahydrate–Mediated Transformations of 2′-Hydroxychalcones to Flavanones, Flavones, and 3′, 5′-Diiodoflavone Under Mild, Environmentally Friendly Conditions
作者:Nemai C. Ganguly、Sumanta Chandra、Sujoy Kumar Barik
DOI:10.1080/00397911.2011.633734
日期:2013.5.15
aqueous acetonitrile, and then these chalcones, upon oxidative cyclization in warm aceticacid with an excess of the same reagent, afforded flavones in acceptable yields. One-pot synthesis of 3′,5′-diiodoflavone has been accomplished by diacetoxyiodobenzene-catalyzed iodination of 2′-hydroxychalcone with tetra-n-butylammonium iodide in aceticacid in the presence of sodium perborate as a terminal oxidant