负载Pd(Ⅱ)两亲性纳米催化剂的制备及其在水中循环催化C-C耦合反应  

Preparation of amphiphilic nanocatalyst-supported Pd(Ⅱ)and its application in C-C coupling reaction in water

作　　者：贾献彬 孙艳平 李新娟[1] JIA Xian-bin;SUN Yan-ping;LI Xin-juan(Henan Key Laboratory of Green Chemistry,Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals,Key Laboratory of Green Chemical Media and Reactions,Ministry of Education,School of Chemistry and Chemical Engineering,Henan Normal University,Xinxiang,453007,China)

机构地区：[1]河南省绿色化学重点实验室,河南省精细化学品绿色制造协同创新中心,教育部绿色化学介质与反应重点实验室,河南师范大学化学化工学院,河南新乡453007

出　　处：《化学研究与应用》2021年第2期317-323,共7页Chemical Research and Application

基　　金：国家自然科学基金项目(21204019)资助;河南省自然科学基金项目(182300410185)资助。

摘　　要：合成在水相反应中具有高活性、易分离、能重复使用的催化剂具有重要的研究意义。我们首先通过部分离子交换的方式,合成了同时具有亲疏水阴离子、具有两亲性的聚离子液体共聚物。该共聚物中咪唑基团提供卡宾配体,进一步与Pd(OAc)2通过络合作用形成稳定的聚合物交联网络,将金属催化剂稳定地固定在网络内部,形成固载Pd(OAc)2的纳米催化剂。该催化剂具有两亲性,有助于在水相中富集反应底物,有效催化水中Suzuki耦合反应。更为重要的是,该催化剂具有良好的催化稳定性,循环使用10次,其催化活性没有明显降低。这种基于聚离子液体固载催化剂的合成方法为环境友好型催化剂的设计和水中绿色反应的发展提供了重要的途径。The synthesis of catalysts with high activity,easy separation and reusability in aqueous phase reaction is of great significance.Firstly,a series of polyionic liquid copolymers with hydrophilic and hydrophobic anions were synthesized by partial ion exchange,which shows amphiphilic.The imidazole group in the copolymer provides carbene ligands,and further forms a stable cross-linked polymer network through complexation with Pd(OAc)2.The metal catalyst is stably fixed in the network to form a Pd(OAc)2 supported nanocatalyst.The catalyst was amphiphilic,which is helpful to enrich the reaction substrate in water and effectively catalyze the Suzuki coupling reaction.In addition,the catalyst is stable and circulates for 10 times,and its catalytic activity is not significantly reduced.This synthesis method of solid-supported catalyst based on polyionic liquid provides an important way for the design of environmentally friendly catalyst and the development of green reaction in water.

关 键 词：聚离子液体 PD(OAC)2 胶束 耦合反应 水相 

分 类 号：O633.13[理学—高分子化学] O614.823[理学—化学]