Abstract
The synthesis and characterization of the ferrocenyl methylhydantoin 5-ferrocenyl-5-methylimidazolidine-2,4-dione, efficiently prepared through a Bucherer–Bergs reaction, and its derivatives carrying tert-butoxycarbonyl (Boc) protecting groups, namely 1,3-bis(tert-butoxycarbonyl)-5-ferrocenyl-5-methylimidazolidine-2,4-dione and 1-(tert-butoxycarbonyl)-5-ferrocenyl-5-methylimidazolidine-2,4-dione, are reported. X-ray diffraction and ESI-mass spectrometry analyses of the ferrocenyl methylhydantoin revealed the presence of C═O···H–N intermolecularly hydrogen-bonded dimers. The mono-Boc derivative formed a hydrogen-bonded dimer in solution, as confirmed by 1H NMR, FT-IR, and cyclic voltammetry experiments at different concentrations in CDCl3 or CHCl3.
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