Polyesters that have a nitrile N-oxide function at the initiation end were prepared and applied to a catalyst-free click reaction for star polymer synthesis. They were obtained by an initial living ring-opening polymerization of lactide and lactones with an alcohol-bearing nitroalkane as the initiator, followed by conversion of the nitroalkane to a nitrile N-oxide function. The resulting polymer and block copolymer nitrile N-oxides showed very high reactivity toward a hexakis(alkenyl) core to give the corresponding star polymers via complete conversion.

中文翻译：

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以硝基烷前体为引发剂合成的用于点击反应的聚酯腈N-氧化物

制备在起始端具有腈N-氧化物功能的聚酯，并将其应用于无催化剂的点击反应，用于星形聚合物合成。它们是通过丙交酯和内酯的初始活性开环聚合，并以含醇的硝基烷作为引发剂，然后将硝基烷转化为腈N-氧化物官能团而获得的。所得的聚合物和嵌段共聚物腈N-氧化物显示出对六（烯基）核的非常高的反应性，从而通过完全转化得到相应的星形聚合物。