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4-(4-Bromophenyl)-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazolo[3,4-b]pyridin-6(7H)-one

✍ Scribed by Shi, Feng ;Tu, Shu-Jiang ;Zhu, Song-Lei

Publisher: International Union of Crystallography
Year: 2005
Tongue: English
Weight: 417 KB
Volume: 61
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536805014029

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✦ Synopsis

The title compound, C 19 H 16 BrN 3 O, was synthesized by the reaction of 5-amino-3-methyl-1-phenylpyrazole with 4-bromophenylaldehyde and Medrum's acid in glycol under microwave irradiation. X-ray crystal structure analysis reveals three crystallographically independent molecules in the asymmetric unit. In all these molecules, the dihydropyridine ring adopts a distorted envelope conformation. In the crystal structure, the molecules exist as N-HÁ Á ÁO hydrogen-bonded dimers.

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✦ Synopsis

4-(4-Bromophenyl)-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazolo[3,4-b]pyridin-6(7H)-one