Pyrazoles VI: The electron‐releasing capacity of the pyrazole ring | Zendy

Wijnberger C. | Zendy; Habraken Clarisse L. | Zendy

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Pyrazoles VI: The electron‐releasing capacity of the pyrazole ring

Author(s) -

Wijnberger C.,

Habraken Clarisse L.

Publication year - 1969

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.5570060415

Subject(s) - chemistry , pyrazole , ring (chemistry) , group (periodic table) , electron , position (finance) , medicinal chemistry , stereochemistry , organic chemistry , physics , quantum mechanics , finance , economics

UV and PMR spectral data and CO frequencies of some methylpyrazoles containing in the 3‐, 4‐ or 5‐position, a formyl‐, acetyl‐ or ethoxycarbonyl group are reported. These data confirm earlier conclusions that, in particular, the 4‐pyrazolyl group acts as an electron releasing group. The syntheses of a number of formyl‐, acetyl‐ and ethoxycarbonyl pyrazoles are described. In addition, some 4‐dicyanovinyl‐ and 4‐tricyanovinylpyrazoles were investigated.

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