title: Two precatalysts for application in asymmetric homogeneous hydrogenation.
abstract: The title compounds, [(1R,1'R,2R,2'R)-2,2'-bis(diphenylphosphanyl)-1,1'-dicyclopentane](η(4)-norbornadiene)rhodium(I) tetrafluoridoborate, [Rh(C34H36P2)(C7H8)]BF4, (I), and [(1R,1'R,2R,2'R)-2,2'-bis(diphenylphosphanyl)-1,1'-dicyclopentane][η(4)-(Z,Z)-cycloocta-1,5-diene]rhodium(I) tetrafluoridoborate dichloromethane monosolvate, [Rh(C34H36P2)(C8H12)]BF4·CH2Cl2, (II), are applied as precatalysts in asymmetric homogeneous hydrogenation, e.g. in the reduction of dehydroamino acids, affording excellent enantiomeric excesses [Zhu, Cao, Jiang & Zhang (1997). J. Am. Chem. Soc. 119, 1799-1800].
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany.
authors.forename: Antje
authors.initials: A
authors.lastname: Meißner
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany.
authors.forename: Cornelia
authors.initials: C
authors.lastname: Pribbenow
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany.
authors.forename: Hans-Joachim
authors.initials: HJ
authors.lastname: Drexler
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany.
authors.forename: Detlef
authors.initials: D
authors.lastname: Heller
keywords: crystal structure; homogeneous asymmetric catalysis; hydrogen consumption; hydrogenation; precatalysts; rhodium complex