Journal of the Chemical Society. Chemical communications p. 1143 - 1146 (1994)
Update date:2022-08-28
Topics:
Foces-Foces, Concepcion
Llamas-Saiz, Antonio L.
Claramunt, Rosa M.
Lopez, Concepcion
Elguero, Jose
The first example of desmotropy in azoles has been found concerning 3-methyl-4-nitropyrazole and its tautomer, 5-methyl-4-nitropyrazole: the crystal and molecular structure of both tautomers has been determined by X-ray analysis, 13C CPMAS NMR spectroscopy has been used for studying the isomerization processes in the solid state.
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