One-pot synthesis of cyclopentadienyl endcapped poly(2-ethyl-2-oxazoline) and subsequent ambient temperature Diels–Alder conjugations

Glassner, Mathias; Kempe, Kristian; Schubert, Ulrich S.; Hoogenboom, Richard; Barner-Kowollik, Christopher

Abstract:

An efficient method for the preparation of cyclopentadienyl endcapped poly(2-ethyl-2-oxazoline) (PEtOx–Cp) via cationic ring-opening polymerization utilizing sodium cyclopentadienide as a termination agent is presented. Subsequent Diels–Alder reactions with N-substituted maleimides proceed quantitatively at ambient temperature. A block copolymer (PEtOx-b-PEG) is prepared employing maleimide terminated poly(ethylene glycol).

Year:

2011

Type of Publication:

Article

Journal:

Chemical Communications

Volume:

47

Pages:

10620 - 20622