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Your search keyword '"Wang, Kunrui"' showing total 2 results
Start Over Author "Wang, Kunrui" Topic hydrazides Publication Year Range Last 50 years
2 results on '"Wang, Kunrui"'

1. Facile synthesis of bicyclic 1-arylpyrazol-5-ones.

Author

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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2. ChemInform Abstract: Facile Synthesis of Bicyclic 1-Arylpyrazol-5-ones.

Author

Wu, Yanjun, Wang, Kunrui, Li, Zhuo, Bai, Xu, and Xi, Ning

Subjects
*PYRAZOLE derivatives, *PYRAZOLONES, *ACYLATION, *HYDRAZIDES, *CARBOXYLIC acids, *BIOCHEMICAL substrates, *CONDENSATION reactions
Abstract

The convenient two-step synthesis of the title pyrazolones involves acylation of hydrazide substrates with carboxylic acids and subsequent DBU-mediated intramolecular condensation. [ABSTRACT FROM AUTHOR]

Published
2014
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