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Synthetic experiments in the benzopyrone series

Part LV. A synthesis of 7∶7′-dihydroxy chromeno-(3′∶4′∶2∶3)-chromone

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Summary

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.

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References

  1. Seshadri and VaradarajanProc. Ind. Acad. Sci., 1953,37 A, 784.

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Sehgal, J.M., Seshadri, T.R. Synthetic experiments in the benzopyrone series. Proc. Indian Acad. Sci. 42, 36–40 (1955). https://doi.org/10.1007/BF03053559

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  • DOI: https://doi.org/10.1007/BF03053559

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