• Synthetic experiments in the benzopyrone series - Part LV. A synthesis of 7∶7′-dihydroxy chromeno-(3′∶4′∶2∶3)-chromone

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      https://www.ias.ac.in/article/fulltext/seca/042/01/0036-0040

    • Keywords

       

      Isoflavone; Acetic Anhydride; Hippuric Acid; Chromone; Dimethyl Sulphate

    • Abstract

       

      Using N-bromosuccinimide, a synthesis of 7∶7′-dihydroxychromeno-(3∶′∶4′∶2∶3) chromone has been effected. 7∶2′∶4′-Triacetoxy-2-methyl isoflavone is brominated to give the 2-bromomethyl isoflavone which is cyclized, after hydrolysis, to the corresponding chromenochromone.

    • Author Affiliations

       

      J M Sehgal1 T R Seshadri1

      1. Department of Chemistry, University of Delhi, Delhi-8
    • Dates

       
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