Synthetic receptors for neutral nitro derivatives

Different arylurea-based receptors with similar Substitution pattern and one guanidine-based receptor were synthesised and Studied concerning their binding capability towards the title functional group; Specific binding Of neutral nitro groups is revealed with relatively high binding constants in DMSO ranging from 470 to 1370 M (1) for urea and 730-990 M (1) for guanidine-based binding partners.