4.4 Article

Copper-catalysed approach to spirocyclic oxindoles via a direct C-H, Ar-H functionalisation

期刊

TETRAHEDRON LETTERS
卷 53, 期 15, 页码 1897-1899

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.01.120

关键词

Copper catalysis; Spirocyclic oxindoles; Radical cyclisation; C-H activation; Natural product synthesis

资金

  1. University of York

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A practical and efficient entry to spirocyclic oxindoles from readily accessible anilide precursors, using only catalytic amounts of an inexpensive copper salt together with air as the sole re-oxidant, is described. In addition to providing access to a broad range of spiro-oxindole products, the utility of this method is demonstrated in a formal synthesis of the natural product, horsfiline. (C) 2012 Elsevier Ltd. All rights reserved.

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