title: Preparation of surface molecularly imprinted Ru-complex catalysts for asymmetric transfer hydrogenation in water media.
abstract: Molecularly imprinted Ru-complex catalysts acting in water were prepared on a SiO(2) surface by molecular imprinting of a SiO(2)-supported Ru-complex using organic polymers as surface matrix overlayers. (R)-1-(o-fluorophenyl)ethanol, which is one of the hydrogenated products of o-fluoroacetophenone, was imprinted on the supported Ru-complex as a template, and an active Ru-complex with a shape-selective reaction space (molecularly imprinted cavity) was prepared inside the wall of the hydrophobic organic polymer matrix overlayers. Structures of the SiO(2)-supported and molecularly imprinted Ru catalysts were characterized by means of solid-state NMR, XPS, XRF, ICP, UV/vis, XAFS, TGA, and SEM. The molecularly imprinted Ru catalysts exhibited fine shape selectivity and enantioselectivity for the asymmetric transfer hydrogenation of o-fluoroacetophenone and its derivatives.
authors.affiliation: Institute for Molecular Science, Okazaki, Japan.
authors.forename: Zhihuan
authors.initials: Z
authors.lastname: Weng
authors.forename: Satoshi
authors.initials: S
authors.lastname: Muratsugu
authors.forename: Nozomu
authors.initials: N
authors.lastname: Ishiguro
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Ohkoshi
authors.forename: Mizuki
authors.initials: M
authors.lastname: Tada