Pendant Donor Groups Research Articles

Ligands for the alkali metals. Part 3. Further examples of nitrogen-containing ‘crown’ compounds

An unambigous route from o-aminophenol to dibenzo-crowns with two secondary amine links is reported. Some new mono- and di-nitrogen-containing monobenzo-crowns have also been prepared. The simple mononitrogencontaining crowns can be modified by N-substitution, with, for example, a pendant donor group, sufficiently flexible to co-ordinate to metals held in a polyether ring.