4.4 Article

Cyanuric chloride: an efficient reagent for the Lossen rearrangement

Journal

TETRAHEDRON LETTERS
Volume 50, Issue 49, Pages 6800-6802

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2009.09.115

Keywords

Lossen rearrangement; Cyanuric chloride; Hydroxamic acids; Isocyanates

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An efficient method for the Lossen rearrangement that uses 2,4,6-trichloro-1,3,5-triazine (TCT) as a promoter is reported. This procedure allowed the preparation of various carbamates, thiocarbamates, and ureas in good yields directly from the corresponding hydroxamic acids. (C) 2009 Elsevier Ltd. All rights reserved.

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