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A new synthesis of dalbergin and methyl dalbergin and a synthesis of allo-dalbergin

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Summary

Though the benzophenone method of synthesis is not quite advantageous for dalbergin and methyl dalbergin, it is more convenient for the preparation of allo-dalbergin (4-phenyl-5-methoxy-6-hydroxy coumarin) and its methyl ether. These compounds and other 4-phenyl coumarins give markedly coloured solutions when treated with alcohol, hydrochloric acid and magnesium; a number of 4-methyl coumarin derivatives also give similar colour reactions. On the other hand 3-phenyl and 3-phenyl-4-methyl coumarin derivatives do not respond to this test which may therefore be of diagnostic value.

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Authors and Affiliations

  1. Department of Chemistry, University of Delhi, Delhi

    V. K. Ahluwalia, A. C. Mehta & T. R. Seshadri F.A.Sc.

Authors
  1. V. K. Ahluwalia
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  2. A. C. Mehta
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  3. T. R. Seshadri F.A.Sc.
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Ahluwalia, V.K., Mehta, A.C. & Seshadri, T.R. A new synthesis of dalbergin and methyl dalbergin and a synthesis of allo-dalbergin. Proc. Indian Acad. Sci. 45, 293–297 (1957). https://doi.org/10.1007/BF03052587

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  • DOI: https://doi.org/10.1007/BF03052587

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