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Synlett 1994; 1994(1): 92
DOI: 10.1055/s-1994-22751
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New Cobalt Catalyzed Cycloisomerization of β-Ketoester ε-Acetylenic

Robert Stammler* , Max Malacria
  • *Université P. et M. Curie, Laboratoire de Chimie Organique de Synthèse, associé au CNRS, Tour 44-54, B. 229, 4, Place Jussieu 75252 - PARIS Cedex 05, FRANCE
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Publication Date:
22 March 2002 (online)

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A very mild and efficient cobalt(I) catalyzed cycloisomerization of β-ketoester ε-acetylenic 1 and 6 is described leading to functionalized methylenecyclopentanes 2 and 7.

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