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Efficient and one-pot catalytic synthesis of 2-imidazolines and bis-imidazolines with p-toluenesulfonic acid under solvent free conditions

✍ Scribed by Masoud Nasr-Esfahani; Morteza Montazerozohori; Safie Mehrizi

Publisher
Journal of Heterocyclic Chemistry
Year
2010
Tongue
English
Weight
109 KB
Volume
48
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

A practical, efficient, and inexpensive method for the synthesis of 2‐imidazoline from the reaction of nitriles with ethylenediamine or 1,2‐propanediamine using p‐toluenesulfonic acid or pyridinium p‐toluenesulfonate under reflux conditions is reported. This catalyst can be successfully applied for the chemoselective conversion of dicyanobenzenes to corresponding mono‐ and bis‐imidazolines. The applications of these catalysts are feasible because of easy preparation, easy handling, stability, inexpensive, good activity, and eco‐friendly. J. Heterocyclic Chem., (2011).

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