Journal of Organic Chemistry p. 2817 - 2826 (2016)
Update date:2022-08-16
Topics:
Soeta, Takahiro
Ishizaka, Tomohiro
Ukaji, Yutaka
Asymmetric 1,2-addition of dialkylzinc reagents to α,β-unsaturated N-tosylaldimines was catalyzed by copper salt in the presence of chiral imidazolium salts having a pyridine ring, which were derived from amino acid, to afford the corresponding chiral allylic amines with up to 91% ee in reasonably high yields. The chiral N-heterocyclic carbene (NHC) ligand played an important role in controlling chemoselectivity.
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