Single-component catalyst/initiators for the organocatalytic ring-opening polymerization of lactide
Single-component catalyst/initiators for the organocatalytic ring-opening polymerization of lactide
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DOI：
10.1021/ja050909n
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发表时间：
2005-06-29
影响因子：
15
通讯作者：
Hedrick, JL
中科院分区：
文献类型：
--
作者：
Csihony, S;Culkin, DA;Hedrick, JL
本文报道了一系列1，3-二均三甲苯基咪唑啉-2-亚基伯、仲醇加合物的合成与表征。这些加合物在室温下作为固体是稳定的，但在溶液中容易释放醇和游离卡宾。这些醇加合物作为优异的单组分催化剂/引发剂用于丙交酯在温和条件下的开环聚合，提供具有受控分子量和窄多分散性的聚合物。利用多官能团加合物制备了具有更复杂结构的聚丙交酯。
The synthesis and characterization of a series of primary and secondary alcohol adducts of 1,3-dimesitylimidazolin-2-ylidene is described. These adducts are stable as solids at room temperature, but readily release alcohol and the free carbene in solution. These alcohol adducts function as excellent single-component catalyst/initiators for the ring-opening polymerization of lactide under mild conditions, providing polymers with controlled molecular weights and narrow polydispersities. Multifunctional adducts were used to prepare poly(lactide)s of more complex architectures.