Journal
TETRAHEDRON
Volume 67, Issue 6, Pages 1178-1182Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.11.094
Keywords
Indolines; Copper; Multicomponent reactions; C-N coupling; Cascade reactions
Categories
Funding
- National Natural Science Foundation of China [20872128]
- Scientific Research Fund of Educational Bureau of Zhejiang Province [20070304]
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One-pot synthesis of 2-(N-sulfonylimino)indolines has been developed. The procedure combines the copper-catalyzed three-component reaction of sulfonyl azides, o-bromophenylacetylenes, and amines and the copper-catalyzed intramolecular C-N coupling in one sequence, which afforded the products in moderate to good yields. The resulting 2-(N-sulfonylimino)indolines could be easily transformed to pharmaceutically valuable oxindoles (indolin-2-ones). (C) 2010 Elsevier Ltd. All rights reserved.
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