• Synthetic experiments in the benzopyrone series - Part VII. Some stages in the synthesis of karanjin

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      https://www.ias.ac.in/article/fulltext/seca/017/01/0016-0019

    • Keywords

       

      Sodium Methoxide; Sodium Ethoxide; Phenoxy Acetic Acid; Synthetic Experiment; Anhydrous Sodium Acetate

    • Abstract

       

      The initial stages in the synthesis of karanjin have been reinvestigated. A new synthesis of karanjol starting form ψ-resorcylic aldehyde is described. The aldehyde is condensed with bromoacetic ester (1 mol.) in the presence of sodium alcoholate and the product hydrolysed and eventually converted into 4-hydroxy-coumarone by well-known stages. The preparation of karanjic acid from karanjol is male best through the action of sodium methoxide and carbon dioxide. Further stages leading to the synthesis of karanjin have already been described.

    • Author Affiliations

       

      T R Seshadri1 2 V Venkateswarlu1 2

      1. Department of Chemistry, Andhra University, Waltair
      2. Guntur
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