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ChemInform Abstract: An Efficient One-Step Method for the Synthesis of 2-(Indolizin-2-yl)benzimidazoles from Quinoxalinones and α-Picoline via a Novel Rearrangement.

✍ Scribed by Vakhid A. Mamedov; Dina F. Saifina; Aidar T. Gubaidullin; Alina F. Saifina; Il'dar Kh. Rizvanov


Publisher
John Wiley and Sons
Year
2009
Weight
26 KB
Volume
40
Category
Article
ISSN
0931-7597

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## Abstract A convenient one‐pot approach to the important pharmacore includes the initial reduction of the nitro group and subsequent acid‐induced rearrangement via a novel ring contraction.

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## Abstract Recyclization of quinoxalines and aza‐analogues (I) in the presence of o‐phenylenediamines (II) or (V) proceeds smoothly in acidic solution to give 2‐quinoxalinylbenzimidazoles and aza‐analogues (III) and (VI)/(VII), respectively.