A Recyclable, Self-Supported Organocatalyst Based on a Poly(N-Heterocyclic Carbene)

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• 作者：Adam B. Powell ; Yasuo Suzuki ; Mitsuru Ueda ; Christopher W. Bielawski ; Alan H. Cowley
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：April 13, 2011
• 年：2011
• 卷：133
• 期：14
• 页码：5218-5220
• 全文大小：710K
• 年卷期：v.133,no.14(April 13, 2011)
• ISSN：1520-5126

文摘

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.