J. Breitenfeld, M. D. Wodrich, Xile Hu
Jul 22, 2014
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53
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Journal
Organometallics
Abstract
The mechanism of alkyl–aryl Kumada coupling catalyzed by the nickel pincer complex Nickamine was studied. Experiments using radical-probe substrates and DFT calculations established a bimetallic oxidative addition mechanism. Kinetic measurements showed that transmetalation rather than oxidative addition was the turnover-determining step. The transmetalation involved a bimetallic pathway.