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

• DOI: 10.1016/j.tet.2011.02.062
• Publication Date: 2011-02-27T14:33:27Z
• Authors: Deepak Kumar Barange; Veerababurao Kavala; Chun-Wei Kuo; Po-Min Lei; Ching-Fa Yao
• Keywords: 4-Hydroxycoumarin; Michael reaction; Sonication; Base (topology); Reaction conditions

AbstractA variety of 3‐substituted 4‐hydroxycoumarin derivatives is prepared in high yields from 4‐hydroxycoumarine (I) and aromatic nitroalkenes [cf.