• Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Flavone; Dimethyl Ether; Sodium Benzoate; Aqueous Sodium Hydroxide; Sodium Sulphite

    • Abstract


      The difficulty of the demethylation of synthetic primetin dimethyl ether into primetin has been solved by the use of anhydrous aluminium chloride in benzene medium. The possibility of the formation of primetin in the Primula through the intermediate stage of 5-hydroxy-flavone is suggested. This is supported by a new synthesis of primetin in which the nuclear oxidation of 5-hydroxy-flavone is effected by means of persulphate. 5-Hydroxy-flavone required for these experiments has been prepared by independent methods.

    • Author Affiliations


      S Rajagopalan1 K Visweswara Rao1 T R Seshadri1

      1. Department of Chemistry, Andhra University, Waltair
    • Dates


© 2021-2022 Indian Academy of Sciences, Bengaluru.