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Cooperative acid–base bifunctional ordered porous solids in sequential multi-step reactions: MOF vs. mesoporous silica
Catalysis Science & Technology ( IF 5 ) Pub Date : 2020/02/06 , DOI: 10.1039/c9cy02404b
Francisco G. Cirujano 1, 2, 3, 4 , Nuria Martín 2, 3, 4, 5 , Guangxia Fu 1, 2, 3, 4 , Chunmei Jia 1, 2, 3, 4 , Dirk De Vos 1, 2, 3, 4
Affiliation  

Two different catalytic platforms, MOF and mesoporous silica, are compared as porous support for basic amino groups. Lysine grafted to MOF-808 is reported for the first time as a highly basic catalyst, showing a competitive performance with respect to benchmark aminoalkoxysilane grafted to MCM-41. Kinetic analysis demonstrates the beneficial effect of acid sites, Zr or Al, on both types of porous solids, resulting in acid–base cooperative effects that stabilize the transition states of two sequential C–C bond forming steps for the one-pot synthesis of substituted indole.

中文翻译:

连续多步反应中的酸基双功能协同有序多孔固体:MOF与中孔二氧化硅

比较了两种不同的催化平台,MOF和中孔二氧化硅,作为碱性氨基的多孔载体。首次报道了接枝到MOF-808上的赖氨酸是一种高度碱性的催化剂,相对于接枝到MCM-41上的基准氨基烷氧基硅烷,它显示出竞争性能。动力学分析表明,酸性位点Zr或Al对两种类型的多孔固体均具有有益作用,从而产生了酸碱协同作用,从而稳定了两个连续C–C键形成步骤的一键合成取代基的过渡态吲哚。
更新日期:2020-03-26
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