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| Título: | A multinuclear NMR study (H-1, C-13, N-15) OF 1-monosubstituted pyrazoles |
Autor: | Claramunt, Rosa M.; Sanz, Dionisia CSIC; Santa María, María Dolores; Jiménez, José Antonio CSIC ORCID ; Jimeno, M. Luisa CSIC ORCID; Elguero, José CSIC ORCID | Fecha de publicación: | 1998 | Editor: | Elsevier | Citación: | Heterocycles 47(1) : 301-314 (1998) | Resumen: | The chemical shifts and coupling constants of twenty-three pyrazoles bearing different substituents at position 1 have been studied by H-1, C-13 and N-15 NMR spectroscopy in solution. Three new pyrazoles (N'-pyrazolyl-P,P,P-triphenylphospha-lambda(5)-azene, sodium 1-hydroxypyrazolate and 1-trifluoromethanesulfonylpyrazole) have been prepared; moreover, to assign the signals of some compounds, two other pyrazoles have been synthesized labelled in both nitrogen atoms with N-15 (l-benzyl and 1-hydroxypyrazole). The tautomerism of 1-hydroxypyrazole has been reexamined. | URI: | http://hdl.handle.net/10261/35663 | ISSN: | 0385-5414 |
| Aparece en las colecciones: | (CENQUIOR) Artículos |
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