作者:Genwei Zhang、Rui Liu、Yajie Chou、Yu Wang、Tanyu Cheng、Guohua Liu
DOI:10.1002/cctc.201701256
日期:2018.4.24
Utilization of amphiphilicpoly(ethylene glycol) monomethyl ether modified hyperbranched polyethoxysiloxane as a support for the construction of bifunctional heterogeneous catalysts enables a highly efficient catalytic system thanks to its amphiphilic nature in aqueous organic transformations. Herein, through a three‐component self‐assembly procedure, we incorporate palladium/phosphine and chiral ruthenium/diamine
Facile assembly of bifunctional, magnetically retrievable mesoporous silica for enantioselective cascade reactions
作者:Zhongrui Zhao、Fengwei Chang、Tao Wang、Lijian Wang、Lingbo Zhao、Cheng Peng、Guohua Liu
DOI:10.1039/c9cc07123g
日期:——
integrated immobilization to encapsulate the Pd/C-coated magneticnanoparticles within the chiral Ru/diamine-functionalized silica shell for the construction of a bifunctional magnetic catalyst is developed. This catalyst realizes a synergistic Suzuki cross-coupling/asymmetrictransferhydrogenation and a successive reduction/asymmetrictransferhydrogenation for the preparation of chiral aromatic alcohols
An integrated immobilization strategy manipulates dual active centers to boost enantioselective tandem reactions
作者:Xiaomin Shu、Ronghua Jin、Zhongrui Zhao、Tanyu Cheng、Guohua Liu
DOI:10.1039/c8cc07841f
日期:——
Manipulation of dual active centers via an integrated immobilization strategy can overcome the restriction of homogeneous catalysis in a sequential organic transformation. Herein, by utilizing hollow-shell-structured silica, hydrogen-bonding immobilization via a ship-in-a-bottle synthesis locks a Pd(carbene) center in a nanocage and covalent-bonding immobilization tethers chiral Ru(diamine) centers