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Some Cyclisations of N-(o-Nitrophenyl)amino Acid Esters

The N-(o-nitrophenyl) derivatives of glycine and sarcosine esters 1a and 1b are cyclised in basic media to benzimidazole N-oxides 2 and 1-hydroxyquinoxaline-2,3-diones 3 respectively. Since the formation of the hydroxyquinoxalinedione is anomalous given the previously accepted mechanism for this reaction an alternative mechanism has been proposed, which can account for both types of cyclisation.

  • Content Type Journal Article
  • Pages 130-133
  • Authors
    • Colin S. French, School of Chemistry, Purdie Building, University of St Andrews, St Andrews, Fife, KY16 9ST, Scotland; Phone: +44-1334-463851; Fax: +44-1334-463808 (csf@st-andrews.ac.uk)
    • David M. Smith, School of Chemistry, Purdie Building, University of St Andrews, St Andrews, Fife, KY16 9ST, Scotland; Phone: +44-1334-463851; Fax: +44-1334-463808 (csf@st-andrews.ac.uk)
    • Journal Molecules Online
    • Online ISSN 1433-1373
    • Journal Volume Volume 1
    • Journal Issue Volume 1, Number 9

Authors:   Colin S. French, David M. Smith
Journal:   Molecules Online
Year:   2004
Publication date:   19-Feb-2004
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