Synthesis of Triaminocyclopentadienyl Iron(II) Tricarbonyl Complexes and Application to the Synthesis of Aminophosphines

A new family of triaminocyclopentadienyl iron(II) tricarbonyl complexes has been synthesized, fully characterized and applied in hydrogenation transfer. These complexes are the first Earth‐abundant metal complexes able to catalyze reductive alkylation of primary and secondary aliphatic amines with 2‐diarylphosphinobenzaldehyde derivatives at room temperature. These non‐pincer type cyclopentadienyl iron(II) complexes demonstrate not only better efficiency than known cyclopentadienone iron carbonyl complexes but also high functionality tolerance. The resulting aminophosphines provide a straightforward and rapid access to potential P−N ligands.