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Copper-catalyzed cyclization ofZ-oximes into 3-methyl-1,2-benzisoxazoles

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
51
Issue
7
Identifiers
DOI: 10.1016/j.tetlet.2009.12.070
Keywords
  • Cyclization
  • Oximes
  • Copper

Abstract

Abstract A practical and effective room temperature copper-catalyzed cyclization of Z-oximes is developed. 3-Methyl-1,2-benzisoxazoles are obtained in 58–79% yields. Also, the Z-selective synthesis of o-bromo acetophenone oximes is presented for the first time.

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