Synthesis and structural characterization of N-para-ferrocenyl benzoyl amino acid ethyl esters and the X-ray crystal structures of the glycyl and (±)-2-aminobutyric acid derivative Fc-C6H4CONHCH(C2H5)CO2Et

N-para-Ferrocenyl benzoyl amino acid ethyl esters 1-8 were prepared by coupling para-ferrocenyl benzoic acid with the appropriate amino acid ethyl ester using the 1,3-dicyclohexylcarbodiimide (DCC), 1-hydroxybenzotriazole (HOBt) protocol. The compounds were structurally characterized by a combination of NMR and mass spectrometry. The X-ray crystal structures of the glycyl 1 and (±)-2-aminobutyrate 7 derivatives have been determined.