title: Catalytic, enantioselective intramolecular hydroamination of primary amines tethered to di- and trisubstituted alkenes.
abstract: The in situ preparation of chiral amido alkyl ate yttrium complexes from an array of chiral N-benzyl-like-substituted binaphthyldiamines is reported. These chiral heteroleptic complexes are shown to be efficient catalysts for the enantioselective intramolecular hydroamination of primary amines tethered to sterically demanding alkenes at high reaction temperatures. Fine tuning of their chiral environment allowed up to 77% ee to be reached for the cyclization of aminoalkenes bearing 1,2-dialkyl-substituted carbon-carbon double bonds. These chiral complexes also demonstrate the ability to promote the cyclization of amine-tethered trisubstituted alkenes in up to 55% ee, as the first report of the formation of enantioenriched quaternary centers by an hydroamination reaction.
authors: Equipe de Catalyse Moléculaire, Université Paris-Sud, ICMMO, UMR 8182, Orsay F-91405, France.
authors: Yulia
authors: Y
authors: Chapurina
authors: Houssein
authors: H
authors: Ibrahim
authors: Régis
authors: R
authors: Guillot
authors: Emilie
authors: E
authors: Kolodziej
authors: Jacqueline
authors: J
authors: Collin
authors: Alexander
authors: A
authors: Trifonov
authors: Emmanuelle
authors: E
authors: Schulz
authors: Jérôme
authors: J
authors: Hannedouche