Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, USA.
J Am Chem Soc. 2011 Jul 20;133(28):10724-7. doi: 10.1021/ja203520p. Epub 2011 Jun 24.
We report the ring-opening copolymerization of maleic anhydride with a variety of epoxides catalyzed by a chromium(III) salen complex. Quantitative isomerization of the cis-maleate form of all polymers affords the trans-fumarate analogues. Addition of chain transfer reagents yields low M(n), narrow PDI polymer samples. This method provides access to a range of new unsaturated polyesters with versatile functionality, as well as the first synthesis of high molecular weight poly(propylene fumarate).
我们报告了由铬（III）salen 配合物催化马来酸酐与各种环氧化物的开环共聚反应。所有聚合物的顺式马来酸酯形式的定量异构化生成反式富马酸酯类似物。添加链转移试剂可得到低分子量、窄分子量分布的聚合物样品。该方法提供了一系列具有多功能性的新型不饱和聚酯，以及高分子量聚（反丁烯二酸丙烯酯）的首次合成。
