Totally chemo- and regioselective cobalt(I)-mediated formal intermolecular cyclotrimerization of alkynes |
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| Authors: | Chouraqui Gaëlle Petit Marc Aubert Corinne Malacria Max |
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| Affiliation: | Université Pierre et Marie Curie (Paris 6), Laboratoire de Chimie Organique associé au CNRS, Tour 44-54, 2ème étage, case 229, 4 place Jussieu, 75252, Paris Cedex 05, France. |
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| Abstract: | [reaction: see text] The first examples of totally chemo- and regioselective formal intermolecular cobalt(I)-catalyzed [2 + 2 + 2] cyclizations of three different alkynes are reported. The use of disposable silylated tethers in the sequence cyclization followed by the displacement of the silicon group led to polysubstituted arenes as a unique cycloadduct in high yields. |
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