Synthesis of bifunctional monodisperse poly(N-isovaleryl ethyleneimine)

A bifunctional initiator, ethanediyl 1,2-bis(2-isobutyl oxazolinium trifluoromethane sulfonate) was prepared and used for the ring opening polymerization of 2-isobutyl oxazoline. Polymerizations were run in CH₃CN at 80 and 60°C and in sulfolane at 80°C. The molecular weight distributions of the poly(N-isovaleryl ethyleneimine)s produced, M/I ≤ 45, approached Poisson distribution.