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- W2162074105 abstract "Chiral N-acylethylenediamines represent a new class of modular ligands for the catalytic asymmetric addition of alkylzinc reagents to aldehydes. The N-acylethylenediamine moiety serves as a metal binding site, while attached amino acids provide the source of chirality. Three sites of diversity on the ligands were optimized to enhance the enantioselectivity of the catalysts using an iterative optimization procedure. The most effective ligand, 4k, was synthesized in a single reaction step from inexpensive and commercially available starting materials. This ligand (10 mol %) catalyzed the addition of Me2Zn to 2-naphthaldehyde, benzaldehyde, and 4-chlorobenzaldehyde to give the corresponding alcohol products in 86%, 84% and 81% ee, respectively." @default.
- W2162074105 created "2016-06-24" @default.
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- W2162074105 date "2004-02-10" @default.
- W2162074105 modified "2023-09-26" @default.
- W2162074105 title "Chiral N-Acylethylenediamines as New Modular Ligands for the Catalytic Asymmetric Addition of Alkylzinc Reagents to Aldehydes." @default.
- W2162074105 cites W2949400731 @default.
- W2162074105 doi "https://doi.org/10.1002/chin.200406015" @default.
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