Easily accessible Salox ligands in combination with cobalt were found to be competent catalysts for the asymmetric conjugate reduction of α,β-unsaturated esters, amides, and nitriles with NaBH4 To give enantioselectivity up to 96.5 : 3.5 er and quantitative yields. Preliminary experiments highlight a relatively complex reaction mechanism.
发现易于获得的 Salox
配体与
钴结合是 α,β-不饱和酯、酰胺和腈与 NaBH 4 的不对称共轭还原的有效催化剂,可提供高达 96.5 : 3.5 er 的对映选择性和定量产率。初步实验突出了一个相对复杂的反应机制。