Enantioselective intramolecular hydroamination catalyzed by lanthanide ate complexes coordinated by N-substituted
David Riegert1, Jacqueline Collin, Abdelkrim Meddour
1Laboratoire de Catalyse Moléculaire, ICMMO, UMR CNRS 8182, Université Paris-sud, 91405 Orsay, France.
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%.
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