one-pot synthesis of 3,3'-(hexane-1,6-diyl)bis(5,5-disubstituted spiro and none spiroimidazolidine-2,4-diones): a bis-drug capability

an improved versatile method was applied for preparation of several new 3,3'-(hexane-1,6-diyl)bis(5,5-disubstituted spiro and none spiroimidazolidine-2,4-diones) or bis-hydantoins. in this process some ketones and aldehydes were converted to several hydantoins effectively. these hydantoins, in the presence of hexamethylene dibromide, dual alkylated and incorporated to bis-imidazolidine-2,4-diones in one step. the reactions ran click chemically and remarkable yields were achieved. the resulted compounds, to our knowledge will potentially have bis-drug behavior in comparison to mono-counterparts, as previously reported for comparable heterocycles in the literature. spectral analysis confirmed the structures of synthesized bis-imidazolidine-2, 4-diones.