Issue 8, 1977
From the journal:

Journal of the Chemical Society, Perkin Transactions 2

Proton, carbon-13, and nitrogen-15 nuclear magnetic resonance studies of [15N]azoles: 1-phenylpyrazole and the tautomerically mobile 3-methyl-1-phenylpyrazolin-5-one

Geoffrey E. Hawkes,   Edward W. Randall,   José Elguero  and  Claude J. Marzin  

Abstract

The 1H, 13C, and 15N chemical shifts and 1H–13C, 1H–15N, 13C–15N, and 15N–16N coupling constants of 95%15N-enriched 1-phenylpyrazole and 1-phenyl-3-methylpyrazolin-5-one have been determined and assigned. In the case of 3-methyl-1-phenyl [15N2]pyrazolin-5-one only the 15N n.m.r. spectrum [solvent (CD3)2SO] shows that slow exchange occurs between the NH and OH tautomers.

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Article information

DOI
https://doi.org/10.1039/P29770001024
Article type
Paper

J. Chem. Soc., Perkin Trans. 2, 1977, 1024-1027

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Proton, carbon-13, and nitrogen-15 nuclear magnetic resonance studies of [15N]azoles: 1-phenylpyrazole and the tautomerically mobile 3-methyl-1-phenylpyrazolin-5-one

G. E. Hawkes, E. W. Randall, J. Elguero and C. J. Marzin, J. Chem. Soc., Perkin Trans. 2, 1977, 1024 DOI: 10.1039/P29770001024

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