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Short Paper | Regular issue | Vol 89, No. 12, 2014, pp.2786-2793
Published online, 17th November, 2014
DOI: 10.3987/COM-14-13111
Facile Synthesis of Benzimidazo[2,1-a]isoindoles from Phenolic Adducts of Ninhydrin

Suven Das* and Arpita Dutta

*Department of Chemistry, Rishi Bankim Chandra College for Women, East Kanthalpara, Naihati, India


An efficient synthesis of substituted benzimidazo[2,1-a]isoindoles via the reaction of phenolic adducts of ninhydrin with o-phenylenediamine in EtOH/AcOH under reflux conditions is achieved in single step. The process involves acid-catalyzed rearrangement followed by reaction with o-phenylenediamine.