title: Direct evidence for a ruthenium(IV) oxo complex-mediated oxidation of a hydroxamic acid in the presence of phosphine oxide donors.
abstract: Ruthenium(II) complexes can be used to oxidise N-Boc hydroxylamine the the presence of tert-butylhydroperoxide to the corresponding nitroso dienophile, which is trapped using cyclohexa-1,3-diene as the hetero-Diels-Alder adduct; direct evidence has been obtained for the intervention of a triphenylphosphine oxide-stabilised ruthenium(IV) oxocomplex as the catalytically active species.
authors.affiliation: GlaxoSmithKline Pharmaceuticals, New Frontiers Science Park, Third Avenue, Harlow, Essex, UK CM19 5AW.
authors.forename: K R
authors.initials: KR
authors.lastname: Flower
authors.forename: A P
authors.initials: AP
authors.lastname: Lightfoot
authors.forename: H
authors.initials: H
authors.lastname: Wan
authors.forename: A
authors.initials: A
authors.lastname: Whiting