- A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes.
A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes.
Chemical communications (Cambridge, England) (2005-03-10)
Gerhard Hilt, Thomas Vogler, Wilfried Hess, Fabrizio Galbiati
PMID15756340
초록
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.
MATERIALS