Transfer Hydrogenation of α-Branched Ketimines: Enantioselective Synthesis of Cycloalkylaminesvia Dynamic Kinetic Resolution
作者:Abel Ros、Antonio Magriz、Hansjörg Dietrich、Mark Ford、Rosario Fernández、José M. Lassaletta
DOI:10.1002/adsc.200505291
日期:2005.12
The transfer hydrogenation of 2-substituted bicyclic and monocyclic ketimines using HCO2H/ Et3N as the hydrogen source and TsDPEN-based Ru(II) and Ir(III) catalysts proceeds with dynamic kinetic resolution to afford the corresponding cis-cycloalkylamines with moderate to excellent levels of diastero- and enantioselectivity. A “one-pot” procedure starting from ketones as starting materials with in situ
使用HCO 2 H / Et 3 N作为氢源以及基于TsDPEN的Ru(II)和Ir(III)催化剂进行2-取代的双环和单环酮亚胺的转移加氢,并进行动态动力学拆分,得到相应的顺式-环烷基胺非对映体和对映体选择性中等至极好的水平。还已经开发了一种以酮为起始原料并与反应中的亚胺原位形成的“一锅法”方法。