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5-hydroxy and methoxy flavylium salts

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Summary

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.

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References

  1. Shah and LaiwallaJ.C.S., 1938, 1828.

  2. Ridgway and RobinsonIbid. J.C.S., 1924, 215.

  3. Leon, Robertson, Robinson and SeshadriIbid., J.C.S., 1931, 2675.

  4. Robinson and VaseyIbid., J.C.S., 1941, 660.

  5. Balaiah, Seshadri and VenkateswarluProc. Ind. Acad. Sci., 1942,16, 68. Rangaswami and SeshadriIbid., Proc. Ind. Acad. Sci., 1940,12, 375. Rangaswami, Seshadri and VenkateswarluIbid. Proc. Ind. Acad. Sci., 1941,13, 316.

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  6. LimayeRasayanam, 1936,1, 12.

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Author notes

  1. L. Ramachandra Row & T. R. Seshadri

    Present address: , Madras

Authors and Affiliations

  1. Department of Chemistry, Andhra University, Waltair

    L. Ramachandra Row & T. R. Seshadri

Authors
  1. L. Ramachandra Row
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  2. T. R. Seshadri
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Row, L.R., Seshadri, T.R. 5-hydroxy and methoxy flavylium salts. Proc. Indian Acad. Sci. (Math. Sci.) 19, 141 (1944). https://doi.org/10.1007/BF03170557

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  • DOI: https://doi.org/10.1007/BF03170557

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