tetrafluoropyrimidine 7 as the starting material in macrocyclic synthesis for the first time. … In summary, macrocycles may be synthesised by reaction of pentafluoropyridine and tetrafluoropyrimidine by linking positions most reactive towards nucleophilic attack by various diamine-bridging units. The range of macrocyclic structures with differing architectures that may be accessed using this S N Ar ring-closing methodology is, therefore, expanded considerably. …
Macrocycles were synthesised by sequential nucleophilic aromatic substitution processes involving pentafluoropyridine and tetrafluoropyrimidine and various diamines as the structural components.