Alkyl to aryl rhodium migration

There are two reports of an alkyl to aryl rhodium migration process. The first example was reported in 2000 by Miura [75], It was discovered that, upon reaction of phenyl boronic acid with norbomene under rhodium-catalyzed conditions, a merry-go-around type sequential alkylation occurred up to four times on the aromatic ring, resulting in a 1,2,3,4-tetranorbomylated benzene as the final product (Scheme 16). Mechanistically, this reaction involves an alkyl to aryl migration of rhodium. Thus, aryl rhodium intermediate 29, generated via an initial transmetalation step,... 

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