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- ISSN: 1570-1786
- E-ISSN: 1875-6255
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Mono- and Bis-Pyrimido[1,2-a]benzimidazoles: Alum Catalyzed Regioselective Three- or Pseudo Five-Component Reaction of 2-Aminobenzimidazole with Aldehyde and Malononitrile
- Source: Letters in Organic Chemistry, Volume 8, Issue 9, Nov 2011, p. 631 - 636
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- 01 Nov 2011
Abstract
A series of mono- and bis-pyrimido-[1,2-a]benzimidazole derivatives is synthesized by the regioselective multicomponent condensation reaction of aldehyde and malononitrile with 2-aminobenzimidazole in the presence of alum as a recyclable and efficient catalyst for this condensation.
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