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Journal of the Serbian Chemical Society 2012 Volume 77, Issue 4, Pages: 415-421
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Ultrasound-assisted catalytic synthesis of acyclic imides in the presence of p-toluenesulfonic acid under solvent free conditions

Nasr-Esfahani Masoud, Montazerozohori Morteza, Filvan Najmeh

A rapid and convenient preparation of acyclic imides by the reaction of aliphatic and aromatic nitriles with acyclic carboxylic anhydride in the presence of catalytic amounts of p-toluenesulfonic acid under thermal or ultrasonic conditions is reported. The advantages of this procedure are moderate reaction times, good to excellent yields, use of inexpensive and ecofriendly catalyst. The reaction of nitriles with aliphatic anhydrides proceeds in thermal conditions, while by the use of ultrasound irradiations these reactions get accelerated.

Keywords: linear carboxylic anhydride, unsymmetrical acyclic imide, nitrile, ptoluenesulfonic acid, ultrasound