High-throughput combinatorial synthesis of substituted benzimidazolones

  • Pan P
  • Sun C
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An efficient liquid-phase synthesis of substituted benzimidazolones 7 is described. Resin bound o-fluoronitrobenzene 1 is reacted with various primary amines to afford o-nitroaniline derivatives 2. Subsequent reduction of the aromatic nitro group followed by cyclization gives a PEG bound benzimidazole- 2-one 4. N-Alkylation of this resin bound scaffold 4 with several electrophiles gives the resulting library in excellent yield and purity after cleavage.

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  • Pi Chi Pan

  • Chung Ming Sun

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