Diarylmethanes catalyzed by nickel(II) ion on nanoporous carbon

Highly efficient catalytic carbon–carbon bond-forming reactions between aryl chlorides and Grignard reagents have been achieved using nickel (II) ion on nanoporous carbon. The catalytic activities in these reactions were so high that the effects of preparation, reduction, and phosphines could not be observed. No positional effect in the substrates was monitored. Increased formation of homocoupling products with functionalized substrates was also observed and a plausible explanation based on the competitive adsorption between substrates and Grignard reagents was proposed.

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