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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/019/03/0141-0145

    • Keywords

       

      Concentrate Sulphuric Acid; Monomethyl Ether; Anhydrous Potassium Carbonate; Sulphuric Acid Solution; Dimethyl Sulphate

    • Abstract

       

      Starting from γ-resorcylic aldehyde some typical 5-hydroxy and methoxy flavylium salts have been prepared and studied. They exhibit negligible fluorescence even in concentrated sulphuric acid. The structural factors that affect fluorescence in flavylium salts are discussed and comparison effected with coumarins.

    • Author Affiliations

       

      L Ramachandra Row1 2 T R Seshadri1 2

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

       
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