A highly active organocatalyst has been shown to affect the asymmetric reductive amination of ketones producing both aromatic and aliphatic amines. At 1 mol% catalyst loading, a series of structurally diverse chiral amines were quickly and economically prepared with good enantioselectivity and generally useful yield. The efficient synthesis of the calcimimetic (+)-NPS R-568 (67%, 89% ee) demonstrated the synthetic applicability of this methodology.
一个高度活性的有机催化剂已被证明能影响酮的不对称还原胺化,生成芳香胺和脂肪胺。在1摩尔%催化剂负载下,一系列结构多样的手性胺被迅速且经济地制备出来,具有良好的对映选择性和一般有用的产率。这种合成方法的有效性通过
钙离子模拟剂(+)-NPS R-568(产率67%,对映体过量89%)的合成得到证明。