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A novel synthesis of 5-aryl-3-phenylpyrazole from 2-aryl-3-benzoyl-1,1-cyclopropanedicarbonitrile and hydrazine

✍ Scribed by Zhongjiao Ren; Weiguo Cao; Jie Chen; Yu Wang; Weiyu Ding

Publisher
Journal of Heterocyclic Chemistry
Year
2006
Tongue
English
Weight
427 KB
Volume
43
Category
Article
ISSN
0022-152X

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✦ Synopsis

A new process for synthesis of 5-aryl-3-phenylpyrazole is achieved. The regioselective ring-opening reaction of 2-aryl-3-benzoyl-1,1-cyclopropanedicarbonitrile with hydrazine plays a crucial role in the described process.

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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Synthesis of 1-substituted 5-aryl-3-(3-c
Synthesis of 1-substituted 5-aryl-3-(3-coumarinyl)-2-pyrazolines by the reaction of 3-aryl-1-(3-coumarinyl)propen-1-ones with hydrazines
✍ Albert LΓ©vai; Jozsef JekΓΆ; D. I. Brahmbhatt πŸ“‚ Article πŸ“… 2005 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 89 KB

## Dedicated to Professor Dr. Fritz Sauter on the occasion of his 75 th birthday 1-Acetyl-and 1-propionyl-2-pyrazolines 11-27 have been synthesized by the reaction of (3coumarinyl)chalcones 1-10 with hydrazine in hot acetic acid or propionic acid. While 5-aryl-3-(3coumarinyl)-1-phenyl-2-pyrazoline