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Synthesis 1986; 1986(12): 1026-1027
DOI: 10.1055/s-1986-31859
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A Convenient Synthesis off Coumarins by Denitro-cyclization

Yukio Yoshida* , Shin-ichi Nagai, Noriichi Oda, Jinsaku Sakakibara
  • *Faculty of Pharmaceutical Sciences, Nagoya City University, Tanabe-dori, Mizuho-ku, Nagoya 467, Japan
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Publication Date:
12 September 2002 (online)

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A new method for the synthesis of coumarins consists of the condensation of 2-nitrobenzaldehydes with maloric acid and denitro-cyclization of the resultant o-nitrobenzylidenemalonic acids using copper in quinoline.