催化作用
共轭微孔聚合物
微型多孔材料
薗头偶联反应
多相催化
材料科学
产量(工程)
聚合
聚合物
酰胺
对映选择合成
对映体过量
偶联反应
组合化学
化学
化学工程
有机化学
高分子化学
钯
复合材料
工程类
作者
Xu Liang,Jia Cui,Shan Gao,Jianjun Wang,Jiao Liu,Hongge Jia,Zhuanfang Zhang,Fengjuan Miao,Yu Zang
标识
DOI:10.1016/j.micromeso.2022.112075
摘要
Chiral conjugated microporous polymers (CCMPs) containing amide groups were designed and synthesized by Sonogashira coupling polymerization. CCMPs are reported for the first time as heterogeneous asymmetric catalyst platforms for the stabilization of Pd with applications in asymmetric catalytic synthesis. Four Pd/CCMPs heterogeneous catalysts exhibited efficient catalytic activity (of up to 87% yield) and excellent enantioselectivity (of up to 97% enantiomeric excess value) in the asymmetric Henry reaction, with a wide range of substrates and easy recovery. The Pd/CCMPs composites could be easily recycled and maintained catalytic activity after 3 cycles of reactions. A rational catalytic cycle was proposed to further understand the role of Pd/CCMPs in the Henry reaction. This study greatly extends the application of CCMPs in heterogeneous asymmetric catalysis.
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