title: Highly active in situ catalysts for anti-Markovnikov hydration of terminal alkynes.
abstract: The anti-Markovnikov hydration of terminal alkynes to give aldehydes is catalyzed by complexes derived in situ from air-stable [CpRu(eta6-naphthalene)]PF6 (C) and 6-aryl-2-diphenylphosphinopyridines (L). Ligands L are readily available from a modular synthesis. Increasing the size of the ligand C-6 aryl group in the order R = Ph < mesityl < 2,4,6-triisopropylphenyl < (2,4,6-triphenyl)phenyl gave hydration catalysts of highest known activity. [reaction: see text]
authors.affiliation: Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Labonne
authors.forename: Thomas
authors.initials: T
authors.lastname: Kribber
authors.forename: Lukas
authors.initials: L
authors.lastname: Hintermann