Asymmetric Synthesis of Chiral Primary Amines by Ruthenium-Catalyzed Direct Reductive Amination of Alkyl Aryl Ketones with Ammonium Salts and Molecular H<sub>2</sub>
作者:Xuefeng Tan、Shuang Gao、Weijun Zeng、Shan Xin、Qin Yin、Xumu Zhang
DOI:10.1021/jacs.7b12898
日期:2018.2.14
amination of simple ketones. The strategy makes use of ammonium acetate as the amine source and H2 as the reductant and is a user-friendly and operatively simple access to industrially relevant primary amines. Excellent enantiocontrol (>90% ee for most cases) was achieved with a wide range of alkyl aryl ketones. The practicability of this methodology has been highlighted by scalable synthesis of key intermediates
钌/C3-TunePhos 催化系统已被确定用于简单酮的高效直接还原胺化。该策略使用乙酸铵作为胺源,H2 作为还原剂,是一种用户友好且操作简单的工业相关伯胺的获取途径。使用范围广泛的烷基芳基酮实现了出色的对映体控制(大多数情况下 >90% ee)。三种药物分子的关键中间体的可扩展合成强调了该方法的实用性。此外,还提出了优化二膦配体 C3-TunePhos 的改进合成路线。