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Synthesis 2010(21): 3705-3709
DOI: 10.1055/s-0030-1258217
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
Further Information
Received
24 June 2010
Publication Date:
18 August 2010 (online)
Publication History
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.
Key words
rearrangements - amides - ketoximes - catalysis - Beckmann rearrangements
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