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Closed Access item A multinuclear NMR study (H-1, C-13, N-15) OF 1-monosubstituted pyrazoles

Authors:Claramunt, Rosa María
Sanz, D.
Santa Maria, M. D.
Jimenez, J. A.
Jimeno, M. Luisa
Elguero, José
Issue Date:1998
Publisher:Elsevier
Citation:Heterocycles 47(1) : 301-314 (1998)
Abstract: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
Appears in Collections:(CENQUIOR) Artículos

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