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Comment Processing & Handling

Cross-coupling catalyst

By Tetsuo Satoh |

A highly active nickel catalyst for performing cross-coupling reactions has been developed by the research group of professor Shu Kobayashi at the University of Tokyo (Japan; www.chem.s.u-tokyo.ac.jp). The researchers were able to immobilize nickel nanoparticles onto a polymer support matrix in such a way to avoid metal leaching and deactivation — two problems that have hampered development up to now. Using the group’s polymer-incarceration (PI) technique (CE, September 2012, p. 16; www.chemengonline.com/chementator/9626.html), they designed N-heterocyclic-carbene precursors as active cross-linking agents within the polymer support matrix. The Ni-based catalyst system was successfully applied to the Corriu-Lumda-Tamao reaction, which is important for forming C–C bonds. Yields of 68–98% have been observed for a broad range of substrates, and the catalyst system could be recovered and reused several times without loss of activity.
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