Synthesis 2010(21): 3705-3709  
DOI: 10.1055/s-0030-1258217
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Efficient Iodine-Mediated Beckmann Rearrangement of Ketoximes to Amides under Mild Neutral Conditions

Nemai C. Ganguly*, Pallab Mondal
Department of Chemistry, University of Kalyani, Kalyani 741235, WB, India
Fax: +91(33)25828282 ; e-Mail: nemai_g@yahoo.co.in;
Further Information

Publication History

Received 24 June 2010
Publication Date:
18 August 2010 (online)

Abstract

Aryl ketoximes readily underwent Beckmann rearrangement to give N-substituted amides in excellent yields on electrophilic activation by elemental iodine in anhydrous acetonitrile under reflux. The main advantages of this environmentally friendly protocol include a high selectivity as a result of the absence of any accompanying deprotection to form the parent ketones as byproducts, mild neutral conditions, procedural simplicity, and particularly ease of isolation of the products.