Abstract
AbstractSeven new per(N‐formyl)polyaza‐crown macrocycles 1‐7 containing 14 to 21 ring members have been synthesized in yields of over 40% via the cyclization reaction of the appropriate per(N‐formyl)polyamine 11‐13 with the appropriate ditosylate, dibromide or diiodide. Three of the per(N‐formyl) macrocycles 5‐7 were hydrolyzed under acidic conditions to give the unsubstituted polyaza macrocycles 8‐10 in yields of over 77%.
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