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Photolysis and Thermolysis of Bis(imino)pyridine Cobalt Azides: C−H Activation from Putative Cobalt Nitrido Complexes

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journal contribution
posted on 24.11.2010 by Crisita Carmen Hojilla Atienza, Amanda C. Bowman, Emil Lobkovsky, Paul J. Chirik
A series of planar aryl-substituted bis(imino)pyridine cobalt azide complexes were prepared and evaluated as synthetic precursors for the corresponding cobalt nitrido compounds. Thermolysis or photolysis of two examples resulted in intramolecular C−H activation of the benzylic positions of the aryl substituents. For the mesityl-substituted compound, C−H activation by the putative nitride resulted in formation of a neutral imine ligand and modification of the chelate by hydrogen transfer to the imine carbon.