1. Facile synthesis of bicyclic 1-arylpyrazol-5-ones.
- Author
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Wu, Yanjun, Wang, Kunrui, Li, Zhuo, Bai, Xu, and Xi, Ning
- Subjects
- *
BICYCLIC compounds , *RING formation (Chemistry) , *CARBOXYLIC acids , *CHEMICAL synthesis , *SUBSTRATES (Materials science) , *METHYLENE group , *CHEMICAL yield - Abstract
Abstract: In this Letter, we described a facile method for constructing fused bicyclic 1-arylpyrazol-5-one ring system. We employed various methylene-containing carboxylic acids as the substrates and proved that the pyrazolone ring closure requires activated methylene group in intermediate II. Accordingly, a series of structurally diversified, fused bicyclic 1-arylpyrazol-5-ones was prepared in moderate to high yields using the requisite substrates. [Copyright &y& Elsevier]
- Published
- 2014
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