Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany.
Chem Commun (Camb). 2011 Oct 14;47(38):10620-2. doi: 10.1039/c1cc14075b. Epub 2011 Sep 1.
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).
提出了一种通过利用环戊二烯钠作为终止剂的阳离子开环聚合制备末端封端的聚（2-乙基-2-恶唑啉）（PEtOx-Cp）的有效方法。随后在室温下与 N-取代马来酰亚胺进行 Diels-Alder 反应可定量进行。采用马来酰亚胺封端的聚乙二醇制备嵌段共聚物（PEtOx-b-PEG）。
