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NMR studies in the heterocyclic series XXIV — 1 H, 13 C and 15 N study of 15 N labelled indazoles
Author(s) -
Fruchier Alain,
Pellegrin Valdo,
Schimpf Rémy,
Elguero José
Publication year - 1982
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270180103
Subject(s) - tautomer , coupling constant , chemistry , indazole , chemical shift , crystallography , stereochemistry , physics , particle physics
The 15 N chemical shifts and 1 H 15 N and 13 C 15 N coupling constants of nine monolabelled indazoles were measured and assigned. The experimental values are discussed in terms of the indazolic and iso‐indazolic structures, and compared with literature data for other related heterocycles. All the results are consistent with an N‐1(H) tautomeric structure for indazole in DMSO‐ d 6 .