https://scholars.lib.ntu.edu.tw/handle/123456789/623907
標題: | Development of dipyridine-based coordinative polymers for reusable heterogeneous catalysts | 作者: | Chang H.-C. Li J.-Q. Lin C.-K. Hsu Y.-J. Tu T.-H. Hsieh Y.-L. Hsu H.-H. Lee G.-H. Liu Y.-H. CHI-HOW PENG |
關鍵字: | coordinative polymer;heterogeneous catalyst;reusable catalyst | 公開日期: | 2019 | 卷: | 66 | 期: | 9 | 起(迄)頁: | 1119-1133 | 來源出版物: | Journal of the Chinese Chemical Society | 摘要: | Poly(di(pyridin-2-yl)methyl acrylate) (PDPyMA), which was obtained by the free radical polymerization of designed coordinative monomer of di(pyridin-2-yl)methyl acrylate, is able to coordinate with various metal ions to form heterogeneous catalysts for diverse catalytic reactions. The Pd and Cu complexes supported by PDPyMA were developed for the heterogeneous Suzuki-Miyaura reaction and Friedel-Crafts alkylation, respectively. The PDPyMA-based catalysts showed no significant decline of reactivity after five times recycling. However, the hydrolysis of the PDPyMA backbone under alkaline conditions limited the catalytic efficiency of this heterogeneous catalyst so that the coordinative monomer was redesigned as 1,1-di(pyridine-2-yl)-2-(4-vinylphenyl)ethan-1-ol and then 2,2??(1-methoxy-2-(4-vinylphenyl)ethane-1,1-diyl)dipyridine (MVPhDPy). With copolymerization of N-isopropyl acrylamide (NIPAM), the efficiency of polymer-based heterogeneous catalysts could be further raised, demonstrated by the increased turn over number in the Suzuki-Miyaura reaction, which approached 5,260 by using the catalyst formed from poly(MVPhDPy-co-NIPAM) and Pd(OAc)2. poly(MVPhDPy-co-NIPAM) copolymer, therefore, could be a versatile platform to support different metal ions for various heterogeneous catalytic reactions. ? 2019 The Chemical Society Located in Taipei & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85069807147&doi=10.1002%2fjccs.201900191&partnerID=40&md5=cd4118ccc4d8a27b4f08cc28d4a23f9b https://scholars.lib.ntu.edu.tw/handle/123456789/623907 |
DOI: | 10.1002/jccs.201900191 |
顯示於: | 化學系 |
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