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Synthesis 1992; 1992(12): 1283-1286
DOI: 10.1055/s-1992-26359
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A Useful Methodology for the Synthesis of 2-Methyl-4-nitrobenzimidazoles

Wei Tian* , Spiros Grivas
  • *Department of Chemistry, Swedish University of Agricultural Sciences, Box 7015, S-750 07 Uppsala, Sweden
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Publication Date:
29 April 2002 (online)

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Cyclocondensation of 3-nitro-1,2-benzenediamines 2 with 2,4-pentanedione provides a convenient route for the preparation of 2-methyl-4-nitrobenzimidazoles 3. A discrepancy in the literature regarding the 5-chloro-, 5-methoxy- and 5-methyl derivatives of the title compounds is discussed.