• A new effect of hydrogen bond formation (chelation) - Part VII. Hydrogen peroxide oxidation of some 2′-substituted chalkones and flavanones

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/037/06/0705-0709

    • Keywords

       

      Naringenin; Flavanone; Aqueous Sodium Hydroxide; Concentrate Sulphuric Acid; Anhydrous Potassium Carbonate

    • Abstract

       

      In their behaviour towards alkaline hydrogen peroxide 2′-methoxy chalkones behave normally and yield flavonols if the 6-position is free and benzalcoumaranones if this position has a methoxyl group. On the other hand 2′-hydroxy flavanones, and 5-hydroxy flavanones remain unaffected. This result is explicable on the basis that these hydroxy flavanone structures are stable and do not undergo change into the corresponding chalkone structures which alone suffer oxidation.

    • Author Affiliations

       

      N Narasimhachari1 D Rajagopalan1 T R Seshadri1

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

       
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