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Cobalt-Induced C-N and C-C Bond Formation via Metal-Stabilized alpha-CF(3) Carbenium Ion
1Laboratoire de Chimie Inorganique et Matériaux Moléculaires Unité CNRS 7071, Université Pierre et Marie Curie, 4 Place Jussieu, Case 42, Paris F-75252 Cedex 05, France, and Laboratoire BioCIS associé au CNRS, Faculté de Pharmacie, Université Paris-Sud, Rue J.B Clément, F-92296 Châtenay-Malabry, France.
Organic Letters
|May 18, 2000
Abstract:
An alpha-CF(3)-carbenium ion stabilized by a bimetallic [Co-Co] cluster was prepared and isolated in good yield, starting from the corresponding alcohol by action of HBF(4)/Et(2)O. C-N and C-C bonds with nitrogen and carbon nucleophiles could be easily formed. Subsequent decomplexation gave the free substituted beta-CF(3) alkynes in good yields.