Chemistry Letters, Vol.40, No.2, 212-214, 2011
Application of Tripodal Linker Units to Immobilized Rhodium Complex Catalysts for Asymmetric Hydrogenation
The tripodal linker unit with one bromopropyl group and three anchoring silicon atoms was used to immobilize a chiral phosphine-rhodium complex catalyst on an ordered mesoporous silica support. The rhodium and phosphorus leaching levels into the reaction solution after asymmetric hydrogenation were lower for this catalyst than for immobilized catalysts prepared using conventional triethoxysilane.