Abstract
AbstractThe condensation reactions of the structurally similar monomers 1,3‐phenylenediamine (1a) and 2,6‐diaminopyridine (1b) with triethyl orthoformate have been compared. Whereas the reaction of 1a resulted in an oligomeric polyformamide, a cyclic trimer was obtained almost quantitatively when monomer 1b was used. The structure of the trimer has been discussed with respect to results obtained by NMR and MALDI spectroscopy.
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