title: Non-covalent immobilisation of p-toluenesulfonic acid in a porous molecular crystal for size-specific acid-catalysed reactions.
abstract: Non-covalent immobilisation of catalysts in nanoporous materials is a promising way to apply homogeneous catalysts to heterogeneous catalytic reactions. Herein we report a size-specific catalytic reaction with an acid catalyst, p-toluenesulfonic acid, immobilised in a porous molecular crystal, metal-macrocycle framework (MMF), composed of metallo-macrocycles. A tritylated substrate which is smaller than the pore dimension of MMF was deprotected by the heterogeneous catalyst, whereas the reaction with a larger substrate was completely suppressed due to the steric restriction.
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shionoya@chem.s.u-tokyo.ac.jp.
authors.forename: Shohei
authors.initials: S
authors.lastname: Tashiro
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shionoya@chem.s.u-tokyo.ac.jp.
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Yonezawa
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shionoya@chem.s.u-tokyo.ac.jp.
authors.forename: Ryou
authors.initials: R
authors.lastname: Kubota
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shionoya@chem.s.u-tokyo.ac.jp.
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Umeki
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shionoya@chem.s.u-tokyo.ac.jp.
authors.forename: Mitsuhiko
authors.initials: M
authors.lastname: Shionoya