title: Enantioselective intramolecular hydroamination catalyzed by lanthanide ate complexes coordinated by N-substituted (R)-1,1'-binaphthyl-2,2'-diamido ligands.
abstract: Ytterbium and lutetium ionic complexes derived from enantiopure substituted (R)-binaphthylamine ligands, of the general formula [Li(THF)n][Ln[(R)-C20H12(NR)2]2], have been investigated for the hydroamination/cyclization of several aminopentenes and an aminohexene. Complexes with isopropyl or cyclohexyl substituents on nitrogen atoms were found to be efficient catalysts under mild conditions for the formation of N-containing heterocycles with enantiomeric excesses up to 78%.
authors.affiliation: Laboratoire de Catalyse Moléculaire, ICMMO, UMR CNRS 8182, Université Paris-sud, 91405 Orsay, France.
authors.forename: David
authors.initials: D
authors.lastname: Riegert
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Collin
authors.forename: Abdelkrim
authors.initials: A
authors.lastname: Meddour
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Schulz
authors.forename: Alexander
authors.initials: A
authors.lastname: Trifonov