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Filtration‐Free Recyclable Catalytic Asymmetric Dihydroxylation Using a Ligand Immobilized on Magnetic Mesocellular Mesoporous Silica
Author(s) -
Lee Daewon,
Lee Jinwoo,
Lee Honggeun,
Jin Sunmi,
Hyeon Taeghwan,
Kim B. Moon
Publication year - 2006
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200505354
Subject(s) - chemistry , mesoporous silica , ligand (biochemistry) , dihydroxylation , filtration (mathematics) , catalysis , reactivity (psychology) , mesoporous material , combinatorial chemistry , homogeneous , heterogeneous catalysis , chemical engineering , enantioselective synthesis , organic chemistry , medicine , biochemistry , statistics , receptor , mathematics , alternative medicine , physics , pathology , engineering , thermodynamics
A new magnetic mesocellular mesoporous silica support featuring a 3D open‐pore structure has been developed for highly efficient, filtration‐free recycling of chiral ligands for catalytic asymmetric dihydroxylation. Reactions using the ligand immobilized on this magnetic silica system exhibited almost the same reactivity and enantioselectivity as those obtained in the homogeneous reaction. Magnetically recovered ligand could be recycled eight times with good to excellent conservation of reaction rates and enantioselectivities.