Amidate ligand design effects in zirconium-catalyzed enantioselective hydroamination of aminoalkenes
作者:Rashidat O. Ayinla、Travis Gibson、Laurel L. Schafer
DOI:10.1016/j.jorganchem.2010.07.023
日期:2011.1
In situ generated axially chiral zirconium biphenyl amidate complexes are efficient precatalysts for the enantioselective intramolecularhydroamination of aminoalkenes, generating α-substituted pyrrolidines and piperidine with up to 74% ee. Five new chelating amide proligands and three new zirconiumamidate complexes have been prepared and fully characterized in this investigation of ligand structure/catalyst