Hydrogenation/Dehydrogenation of Unsaturated Bonds with Iron Pincer Catalysis

This chapter examines iron pincer complexes that catalyze hydrogenation and dehydrogenation reactions of common organic compounds, focusing on work reported in the last decade. Substrates include aldehydes, ketones, alcohols, esters, nitriles, imines, amines, CO₂, formic acid, amides, alkenes, and alkynes. Hydroboration and hydrosilation catalysis with iron pincers are also summarized. Some examples of enantioselective iron catalysis using pincers and tetradentate ligands are included. Examples of C–O cleavage have also been reported, and the scope of this chemistry is presented.