A Recyclable, Self-Supported Organocatalyst Based on a Poly(N-Heterocyclic Carbene)
A Recyclable, Self-Supported Organocatalyst Based on a Poly(N-Heterocyclic Carbene)
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DOI：
10.1021/ja200602e
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发表时间：
2011-04-13
影响因子：
15
通讯作者：
Cowley, Alan H.
中科院分区：
文献类型：
--
作者：
Powell, Adam B.;Suzuki, Yasuo;Cowley, Alan H.
本文报道了一种高分子咪唑盐的合成及其催化活性。与公知的树脂负载的N-杂环卡宾（NHC）相反，本文所述的材料提供了具有在原位产生时沿沿着正交定位的NHC的聚合物。相应的聚（NHC）的独特的结构特征，使材料显示类似或上级的单体类似物所显示的催化活性。此外，新的催化剂被成功地回收和重复使用，在几个周期的性能损失最小。
We report the synthesis and catalytic activity of a polymeric imidazolium salt. In contrast to the well-known resin-supported N-heterocyclic carbenes (NHCs), the material described herein affords a polymer with NHCs orthogonally positioned along a main chain upon generation in situ. The unique structural characteristics of the corresponding poly(NHC)s enabled the materials to display catalytic activities that were similar or superior to those displayed by monomeric analogues. Moreover, the new catalyst was successfully recovered and reused with minimal loss of performance over several cycles.