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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.
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Lipshutz et al. (2001) studied this question.
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