title: Ruthenium complexation in an aluminium metal-organic framework and its application in alcohol oxidation catalysis.
abstract: A ruthenium trichloride complex has been loaded into an aluminium metal-organic framework (MOF), MOF-253, by post-synthetic modification to give MOF-253-Ru. MOF-253 contains open bipyridine sites that are available to bind with the ruthenium complex. MOF-253-Ru was characterised by elemental analysis, N(2) sorption and X-ray powder diffraction. This is the first time that a Ru complex has been coordinated to a MOF through post-synthetic modification and used as a heterogeneous catalyst. MOF-253-Ru catalysed the oxidation of primary and secondary alcohols, including allylic alcohols, with PhI(OAc)(2) as the oxidant under very mild reaction conditions (ambient temperature to 40 °C). High conversions (up to >99%) were achieved in short reaction times (1-3 h) by using low catalyst loadings (0.5 mol% Ru). In addition, high selectivities (>90%) for aldehydes were obtained at room temperature. MOF-253-Ru can be recycled up to six times with only a moderate decrease in substrate conversion.
authors.affiliation: Berzelii Center EXSELENT on Porous Materials, Stockholm University, SE-10691 Stockholm, Sweden.
authors.forename: Fabian
authors.initials: F
authors.lastname: Carson
authors.forename: Santosh
authors.initials: S
authors.lastname: Agrawal
authors.forename: Mikaela
authors.initials: M
authors.lastname: Gustafsson
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Bartoszewicz
authors.forename: Francisca
authors.initials: F
authors.lastname: Moraga
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zou
authors.forename: Belén
authors.initials: B
authors.lastname: Martín-Matute