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The structures of 2‐(4,5‐dihydro‐5‐aryl‐3‐isoxazolyl)‐1‐arylethanone oximes. An unusual behaviour in its 1 H‐NMR and mass spectra
Author(s) -
Díaz Eduardo,
Barrios Héctor,
Toscano Rubén A.,
Yuste Francisco,
Reynolds William F.,
Aguilera José Luis,
Caballero Efrén
Publication year - 1992
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570290546
Subject(s) - chemistry , mass spectrum , hydroxylamine hydrochloride , aryl , potassium hydroxide , hydroxylamine , hydrochloride , ring (chemistry) , nmr spectra database , crystal structure , proton nmr , yield (engineering) , medicinal chemistry , ethanol , crystallography , spectral line , organic chemistry , ion , alkyl , physics , materials science , astronomy , metallurgy
The reaction of dibenzalacetones substituted on the aromatic ring with hydroxylamine hydrochloride and potassium hydroxide in refluxing ethanol affords several compounds. Herein, we report the structures and spectral properties of several oximes of 2‐(4,5‐dihydro‐5‐aryl‐3‐isoxazolyl)‐1‐arylethanones 6 . Unusual behaviour on its 1 H‐nmr and mass spectra was observed. Single crystal X‐ray diffraction was performed on compound 6d to support our structural considerations abouth the title compounds.