Synthesis of C3-nitroalkylated-4-hydroxycoumarin and hydroxyiminodihydrofuroquinolinone derivatives via the Michael addition of cyclic 1,3-dicarbonyl compounds to β-nitrostyrenes

Deepak Kumar Barange, Veerababurao Kavala, Chun Wei Kuo, Po Min Lei, Ching Fa Yao

研究成果: 雜誌貢獻文章

22 引文 斯高帕斯(Scopus)

摘要

Herein, we describe a practical and efficient method for the C3-alkylation of 4-hydroxycoumarin by sonication under 'on water' conditions and mild temperatures using various substituted β-nitrostyrenes. In addition, we report on the development of a convenient process for the regioselective synthesis of angular hydroxyiminodihydrofuroquinolinone catalyzed by base. 4-Hydroxycoumarin and 4-hydroxy-1-methylquinolin-2(1H)-one reacted smoothly with various nitroolefins to furnish C3-nitroalkylated hydroxycoumarin derivatives (by sonication and 'on water' conditions) and hydroxyiminodihydrofuroquinolinone derivatives (ambient condition) as a mixture of Z (minor) and E (major) isomers, respectively. The mild reaction conditions employed, ease of isolation of the products and excellent yields constitute important features of the methodology.

原文英語
頁(從 - 到)2870-2877
頁數8
期刊Tetrahedron
67
發行號16
DOIs
出版狀態已發佈 - 2011 四月 22

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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