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Free Radicals derived from Amines and Amino-acids in some Reactions of Ninhydrin

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Abstract

ALLOXAN and dialuric acid form free radicals in alkaline solution1,2. Ninhydrin, a chemical analogue of alloxan, has been shown to form a free radical on reaction with glycine3. The electron spin resonance (ESR) spectrum of this radical consists of 9 lines and is attributed to the two pairs of equivalent benzenoid protons of ninhydrin.

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References

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  1. Isotopes Laboratory, University of St. Andrews, Queen's College, Dundee, Scotland

    J. C. ORR

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  1. J. C. ORR
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ORR, J. Free Radicals derived from Amines and Amino-acids in some Reactions of Ninhydrin. Nature 205, 1008–1010 (1965). https://doi.org/10.1038/2051008a0

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