摘要
本文主要介绍近年来高分子材料负载的钯金属在非均相催化C—C键偶联反应中的研究与应用。此类催化剂具有较高的活性、选择性和多次重复使用的稳定性,在催化反应膜器件、自动化的组合化学合成和实现向环境友好型的材料转化等方面有突出的发展前景。催化剂微囊化和纳米团簇化都是获取较高的活性和回收率的手段。使用高分子配体的优点是能直接固定金属,并通过不同的配位原子调节控制钯的活性,甚至呈现相应的小分子配合物不能催化的高分子效应,而高分子链本身还可以提供反应所需的良好机械性能和对不同反应介质的亲合性。
This article reviews recent advances in polymer-supported Pd catalysts for heterogeneous C--C coupling reactions. This type of catalysts possesses high activities, selectivities, and multiple reusable performance for Suzuki-,Heck-, Sonogashira-, Stille-, Ullmann- and related coupling reactions, therefore showing great potential in membrane reactors, automatic combinatorial synthesis, and transformation to environmental friendly materials. Microencapsulation and nanocluster formation are useful methods for achieving both high activity and recyclization. Polymeric ligands have several advantages that they can immobilize the metal, adjust and control the activity of the metal, and even demonstrate macromolecular effect, while the polymer chains can present necessary mechanical properties and desired affinities in different reaction media.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2009年第7期1434-1441,共8页
Progress in Chemistry
关键词
催化剂
非均相催化
高分子
钯
偶联
catalysts
heterogeneous catalysis
polymer
palladium
coupling reactions
