Journal
TETRAHEDRON LETTERS
Volume 45, Issue 12, Pages 2681-2683Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2004.01.131
Keywords
Beckmann rearrangement; task-specific ionic liquid; ketoxime extraction
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Under mild conditions and without any additional organic solvents, Beckmann rearrangement of ketoximes was performed in a novel task-specific ionic liquid consisting sulfonyl chloride. Especially for the conversion of cyclohexanone oxime to epsilon-caprolactam, epsilon-caprolactam has good solubility in water while the task-specific ionic liquid is immiscible with water, therefore, epsilon-caprolactam could be easily separated from the reaction system by water extraction. (C) 2004 Elsevier Ltd. All rights reserved.
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