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Synthesis 1985; 1985(10): 938
DOI: 10.1055/s-1985-31391
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Reactions of Benzofuroxan with 1,3-Diketones or ß-Ketoesters on Silica Gel or Alumina

Minoru Hasegawa* , Tohru Takabatake
  • *Department of Pharmacy, College of Science & Technology, Nihon University, Kanda Surugadai, Chiyoda-ku, Tokyo 101, Japan
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Publication Date:
27 September 2002 (online)

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The cyclocondensation of benzofuroxan with 1,3-diketones, 3-oxoalkanoic esters, butanedioic esters, or 3-oxoalkanamides in the presence of silica gel (adsorption of the components on silica gel) represents a convenient method for the synthesis of 2,3-disubstituted quinoxaline-1,4-bis-oxides.