第一作者：Wenqian Yu

通讯作者：Hong-bin Sun

合写作者：Yiming Wang,Xin Chen,Rongxiu Guo,Tong Jiang,Cengceng Du,Wenhui Zhang,Yuqing Liu,Chengrui Li, Tianchen Han,Hong Li,Yongjian Ai

发表刊物：Microporous and Mesoporous Materials

卷号：363

影响因子：4.8

DOI码：10.1016/j.micromeso.2023.112828

所属单位：Department of ChemistryNortheastern University

教研室：物理化学

刊物所在地：NETHERLANDS

摘要：Developing confined heterogeneous catalytic systems with diverse and evenly dispersed active sites is a hot research topic for various applications. However, the issues related to the agglomeration of active nanoparticles, spatial distribution uniformity of active nanoparticles, and coverage of active sites with the participation of surfactant or organic ligand restrict the activity or selectivity. In this work, a confined catalyst Pd(PPh3)4@MOF-808-150 was successfully prepared through a host-guest assembling strategy followed by thermal activation to enhance the rigidity of the catalyst. The synthesized catalyst is employed to generate β-ketoenamines in the cascade reaction involving nitro-reduction and sequential condensation. This catalyst effectively resolves the electronic preference conflict of the two catalytic steps by isolating the different active sites, demonstrating excellent activity and high chemoselectivity. It is generally applicable to the synthesis of many β-ketoenamines, with up to 16 kinds of products that have been successfully prepared with conversion and selectivity up to 99%. The extended synthesis method holds significant potential for developing the nanoconfined catalyst without surfactant encapsulation.

关键字：Confined catalyst ;Cascade reaction ;Synergistic effect ;Metal-organic frameworks ;Extended “boat-around-ship” ;β-ketoenamines

论文编号：WOS:001092997700001

学科门类：理学

一级学科：化学

页面范围：112828

ISSN号：1387-1811

是否译文：否