New Macrocyclic Ligands. VII The Synthesis of Mixed-Donor Spiro-Linked Macrocycles

Article abstract of DOI:10.1071/CH9951917

The syntheses of five new spiro-linked bis-macrocycles, incorporating four ether oxygen and four or six secondary nitrogen heteroatoms, are reported.Two strategies were employed - the first involved the condensation of a spiro tetraaldehyde with 2 equiv.