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Reaction of 2-[(2-Oxo-2-arylethyl)anilino]-1-aryl-1-ethanones with o-phenylenediamine: Formation of quinoxalines

✍ Scribed by Gurusamy Ravindran; Shanmugam Muthusubramanian; Subbu Perumal

Publisher
Journal of Heterocyclic Chemistry
Year
2009
Tongue
English
Weight
72 KB
Volume
46
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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Unexpected quinoxalines (3) have been obtained from a one‐pot reaction of 2‐[(2‐oxo‐2‐arylethyl)anilino]‐1‐aryl‐1‐ethanones (1) with o‐phenylenediamine (2) in the presence of a catalytic amount of p‐toluene sulfonic acid. The reaction presumably involves a tandem carbonyl addition—eliminative cyclization—air oxidation sequence. J. Heterocyclic Chem., 46, 332 (2009).

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