Bis(imino)pyridine iron dinitrogen compounds are known to be active pre-catalysts for a variety of chemical transformations.  Particularly prominent are the hydrogenative cyclization of 1,6-enynes and diynes and the [2p+2p] cycloaddition of a,?-olefins.  In an effort to improve catalytic activity, substrate scope and understand the importance of imine dissociation in the catalytic cycle, a new bis(imino)pyridine iron dinitrogen compound has been prepared such that the structural modifications restrict the capacity for ?2�coordination of the ligand.  The catalytic activity of this compound will be presented and the mechanistic implications discussed.

Bis(imino)pyridine iron cyclization chemistry: Ligand modification toward mechanistic insight

244th National Meeting (2012)

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