• Insecticidal properties and chemical constitution - Part VI. Some phenyl and halogen substituted coumarins

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/035/02/0075-0081

    • Keywords

       

      Coumarin; Chromone; Anhydrous Potassium Carbonate; Insecticidal Property; Dimethyl Sulphate

    • Abstract

       

      A number of phenyl and halogen substituted coumarins with substituents in different positions have been examined as fish poisons. The presence of a phenyl group in the 3 or 4 position or a halogen atom in the 3-position seems to be most favourable. Higher substitution does not appreciably enhance the toxic properties. In consonance with previous results, a hydroxyl group in the 5-position seems to produce greater toxicity than one in the 7-position.

    • Author Affiliations

       

      T R Seshadri1 S Varadarajan1

      1. From the Department of Chemistry, Delhi University, Delhi
    • Dates

       
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