• Nuclear oxidation in flavones and related compounds - Part XLIII. The preparation andp-oxidation of flavones analogous to datiscetin and morin

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/037/05/0611-0619

    • Keywords

       

      Flavone; Anhydrous Potassium Carbonate; Dimethyl Sulphate; Methoxy Flavone; Hydriodic Acid

    • Abstract

       

      The synthesis of 5∶7∶2′-trihydroxy and 5∶7∶2′∶4′-tetrahydroxy flavones has been repeated using Allan-Robinson condensation and both hydriodic acid and anhydrous aluminum chloride as demethylating agents. With these reagents and under ordinary conditions isomeric change involving the 2′-hydroxyl group does not occur. The tetrahydroxy flavone has also now been prepared by the procedure of Algaret al. The sample is found to be identical with the one obtained by the method of Robinson and Venkataraman and is different from lotoflavin. The nuclear oxidation of the partial methyl ethers of the two flavones has been carried out using alkaline persulphate.

    • Author Affiliations

       

      S R Gupta1 T R Seshadri1

      1. Department of Chemistry, Delhi University, India
    • Dates

       
  •  

© 2021-2022 Indian Academy of Sciences, Bengaluru.