A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes.

نویسندگان

  • Gerhard Hilt
  • Thomas Vogler
  • Wilfried Hess
  • Fabrizio Galbiati
چکیده

The intermolecular cyclotrimerisation of terminal and internal alkynes can be catalysed by simple cobalt complexes such as a CoBr2(diimine) under mild reaction conditions when treated with zinc and zinc iodide with high regioselectivity in excellent yields.

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عنوان ژورنال:
  • Chemical communications

دوره 11  شماره 

صفحات  -

تاریخ انتشار 2005