A unique tautomer of 1-n-hexyl-3-phenyl-1H-pyrazol-5-ol.
In the title compound, C15H20N2O, the bond distances and angles are consistent with the presence of the hydroxy tautomer. This tautomer was unambiguously determined by the clear presence of a H atom bonded to oxygen, as well as the total absence of any residual electron density around the N atom in the heterocycle, thus precluding any possibility of desmotropism.
Belmar
Julio
J
Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile. jbelmar@udec.cl
Jiménez
Claudio
C
Ruiz-Pérez
C
C
Delgado
F S
FS
Baggio
Ricardo
R