Aminotelechelics: A convenient synthesis and characterization of primary amino‐terminated telechelic poly(propylene glycol) and polyisobutylene

The synthesis of amino‐terminated telechelic poly(propylene glycol) and polyisobutylene from their corresponding dihydroxy‐terminated derivatives was studied. The synthesis of these aminotelechelics was achieved by the coupling of imidazolylformates with ethylenediamine. The structure of the resulting amino‐functionalized polymers was determined by 1H NMR, 13C NMR, and matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry. On the basis of the spectroscopic and spectrometric results, a complete conversion of dihydroxy termini into diamino end groups was observed; that is, the number‐average functionality was found to be 2.