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Synthesis 1985; 1985(5): 548-550
DOI: 10.1055/s-1985-31272
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Synthesis of 3-(2-Hydroxyaryl)-1-methyl-2-pyrazolin-5-ones from 4-Hydroxycoumarins and their Conversion to 2-Methyl-1-benzopyrano[4,3-c]pyrazol-3(2H)-one Derivatives

Bernard Chantegrel* , Suzanne Gelin
  • *Laboratoire de Chimie Organique, Institut National des Sciences Appliquées F-69 621 Villeurbanne Cedex, France
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Publication History

Publication Date:
22 May 2002 (online)