Preparation of Nickel-on-Charcoal (Ni/C): An Improved Protocol
Date
2012-11-20
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Abstract
A modified preparation of the inexpensive,
heterogeneous precatalyst Ni(II)/C, has been
developed which (1) reduces the number of solvent
distillations; (2) generates no organic waste; (3)
leads to complete impregnation of the Ni(II) salts invested;
and (4) extends the number of sources of
charcoal which can be used to make the catalyst.
Several carbon±carbon, as well as carbon±nitrogen
and carbon±hydrogen bond-forming reactions have
been run which compare Ni/C prepared via this new
protocol with those formed using the original protocol.
The results from each are virtually identical
Description
A modified preparation of the inexpensive,
heterogeneous precatalyst Ni(II)/C, has been
developed which (1) reduces the number of solvent
distillations; (2) generates no organic waste; (3)
leads to complete impregnation of the Ni(II) salts invested;
and (4) extends the number of sources of
charcoal which can be used to make the catalyst.
Several carbon±carbon, as well as carbon±nitrogen
and carbon±hydrogen bond-forming reactions have
been run which compare Ni/C prepared via this new
protocol with those formed using the original protocol.
The results from each are virtually identical
Keywords
aromatic aminations; aryl chlorides; biaryls; cross-couplings; heterogeneous catalysis; nickel-on-charcoal