Thus, a clear trend in the π‐acceptor ( IPr > 5 a > 5 b > 2 a > 2 b ) and σ‐donor ( 5 b > 5 a > 2 b > 2 a > IPr ) properties of carbenes can be concluded.
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Nickel-Catalyzed Intramolecular 1,2-Aryl Migration of Mesoionic Carbenes (iMICs).
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