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Synthesis of 3-aryl-5-styryl-2-pyrazolines by the reaction of (E,E)-cinnamylideneacetophenones with hydrazines and their oxidation into pyrazoles

✍ Scribed by Albert LÉvai; TamÁs Patonay; Artur M. S. Silva; Diana C. G. A. Pinto; José A. S. Cavaleiro

Publisher: Journal of Heterocyclic Chemistry
Year: 2002
Tongue: English
Weight: 72 KB
Volume: 39
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570390421

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✦ Synopsis

Abstract

New 3‐aryl‐5‐styryl‐2‐pyrazolines have been synthesized by the reaction of (E,E)‐cinnamylideneace‐tophenones with hydrazines. These 2‐pyrazolines have also been converted into the corresponding pyrazoles by oxidation with chloranil. Structures of all new compounds have been elucidated by elemental analysis, mass spectrometry, ir and nmr spectroscopic measurements.

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