Practical, economical, and eco-friendly starch -supported palladium catalyst for Suzuki coupling reactions
Practical, economical, and eco-friendly starch -supported palladium catalyst for Suzuki coupling reactions
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DOI：
10.1016/j.jcis.2017.02.047
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发表时间：
2017-06-15
影响因子：
9.9
通讯作者：
Baran, Talat
中科院分区：
文献类型：
--
作者：
Baran, Talat
在催化系统中，载体材料需要既环保又低成本，并且具有高热稳定性和化学稳定性。本文设计了一种具有这些优异性能的新型淀粉负载钯催化剂，并在微波加热、无溶剂、温和反应条件下的铃木偶联反应中评价了其催化活性。由于苯基硼酸与 23 种不同的底物（带有假种苯溴化物、碘化物和氯化物）发生偶联反应，淀粉负载型催化剂在仅 5 分钟后就产生了显着的反应产率。还研究了催化剂的寿命，催化剂可以重复使用 10 次。淀粉负载的 Pd(II) 催化剂通过使用简单、快速且环保的方法产生了显着的 TON（高达 25,000）和 TOF（高达 312,500）值。此外，针对不同的商业钯催化剂测试了催化剂的催化性能，绿色淀粉负载催化剂具有优异的选择性。催化测试表明，新型淀粉基钯催化剂被证明是一种经济实用的联芳基化合物合成催化剂。(C) 2017 Elsevier Inc. 版权所有。
In catalytic systems, the support materials need to be both eco friendly and low cost as well as having high thermal and chemical stability. In this paper, a novel starch supported palladium catalyst, which had these outstanding properties, was designed and its catalytic activity was evaluated in a Suzuki coupling reaction under microwave heating with solvent -free and mild reaction conditions. The starch supported catalyst gave remarkable reaction yields after only 5 min as a result of the coupling reaction of the phenyl boronic acid with 23 different substrates, which are bearing aril bromide, iodide, and chloride. The longevity of the catalyst was also investigated, and the catalyst could be reused for 10 runs. The starch supported Pd(II) catalyst yielded remarkable TON (up to 25,000) and TOF (up to 312,500) values by using a simple, fast and eco-friendly method. In addition, the catalytic performance of the catalyst was tested against different commercial palladium catalysts, and the green starch supported catalyst had excellent selectivity. The catalytic tests showed that the novel starch based palladium catalyst proved to be an economical and practical catalyst for the synthesis of biaryl compounds.(C) 2017 Elsevier Inc. All rights reserved.