Catalytic Asymmetric Reductive Amination of Aldehydes via Dynamic Kinetic Resolution
作者:Sebastian Hoffmann、Marcello Nicoletti、Benjamin List
DOI:10.1021/ja065404r
日期:2006.10.1
A novel organocatalytic asymmetric reductive amination of aldehydes has been developed. Treating racemic alpha-branched aldehydes with p-anisidine and a Hantzsch ester in the presence of our previously developed phosphoric acid catalyst, TRIP, gave beta-branched secondary amines in excellent yields and enantioselectivities via an efficient dynamic kinetic resolution. The process is applicable to several
已开发出一种新型的醛的有机催化不对称还原胺化。在我们之前开发的磷酸催化剂 TRIP 的存在下,用对茴香胺和 Hantzsch 酯处理外消旋 α-支化醛,通过有效的动态动力学分辨率以优异的产率和对映选择性得到 β-支化仲胺。该方法适用于几种不同的芳香醛和胺,但与脂肪醛的对映体比例略有降低。