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- Title
Expeditious Synthesis and Single Crystal Structure of New Pyrazole-Fused 1,4-Oxazine.
- Authors
Zheng, Liang-Wen; Zhao, Bao-Xiang; Liu, Ying-Rui
- Abstract
A series of 2,6-diphenyl-4 H-pyrazolo[5,1- c][1,4]oxazin-4-ones has been synthesized via a lactonization of 1-(2-oxo-2-phenylethyl)-3-phenyl-1 H-pyrazole-5-carboxylic acids in the presence of Ac2O at reflux temperature. The products were isolated by simple filtration in excellent yields and were characterized by IR, 1H-NMR, and HRMS. The molecular structure was confirmed by the X-ray crystal analysis of one compound that was prone to crystallization.
- Subjects
HETEROCYCLIC compounds synthesis; PYRAZOLES; SINGLE crystals; CRYSTAL structure; OXAZINES; TEMPERATURE effect; CARBOXYLIC acids; NUCLEAR magnetic resonance spectroscopy; X-ray crystallography
- Publication
Journal of Heterocyclic Chemistry, 2012, Vol 49, Issue 3, p691
- ISSN
0022-152X
- Publication type
Article
- DOI
10.1002/jhet.833