Identification of some isomeric 3,5‐unsymmetrically substituted 1‐aroyl‐pyrazole derivatives by NMR spectroscopy | Zendy

Mitkidou Sophia | Zendy; Papadopoulos Stelios | Zendy; StephanidouStephanatou Julia | Zendy

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Identification of some isomeric 3,5‐unsymmetrically substituted 1‐aroyl‐pyrazole derivatives by NMR spectroscopy

Author(s) -

Mitkidou Sophia,

Papadopoulos Stelios,

StephanidouStephanatou Julia

Publication year - 1991

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.5570280605

Subject(s) - chemistry , pyrazole , ring (chemistry) , nuclear magnetic resonance spectroscopy , stereochemistry , carbon 13 nmr , nmr spectra database , spectroscopy , chemical shift , medicinal chemistry , organic chemistry , spectral line , physics , quantum mechanics , astronomy

The 1 H and 13 C nmr chemical shifts are used for the structural assignment of isomeric 1‐aroyl‐4,5‐dihydro‐5‐hydroxy‐4,4‐dimethyl‐1 H ‐pyrazoles 1 unsymmetrically substituted with phenyl or methyl in the 3,5‐positions of the pyrazole ring. The 1 H nmr spectra of 1‐aroyl‐ or 1‐acetyl‐4‐methyl‐1 H ‐pyrazoles 2 are useful in structure elucidation of unsymmetrically 3‐ or 5‐methyl substituted derivatives.

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