Iron(II)-Catalyzed Radical Addition to Aldimines with Hantzsch Ester as Two-Hydrogen-Atom Donor

The first Fe(OTf)2-catalyzed radical addition to aldimines with Hantzsch ester as a two-hydrogen atom donor is reported. The tin-free reaction works well for electron-deficient substrates and provides a potentially useful approach to α-branched amines and α-amino acids.