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Title

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

AuthorsClaramunt, Rosa M.; Sanz, D.; Santa Maria, M. D.; Jiménez, J. A.; Jimeno, M. Luisa ; Elguero, José
Issue Date1998
PublisherElsevier
CitationHeterocycles 47(1) : 301-314 (1998)
AbstractThe 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.
URIhttp://hdl.handle.net/10261/35663
ISSN0385-5414
Appears in Collections:(CENQUIOR) Artículos
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