Tungsten-Catalyzed Regio- and Enantioselective Aminolysis of<i>trans</i>-2,3-Epoxy Alcohols: An Entry to Virtually Enantiopure Amino Alcohols
作者:Chuan Wang、Hisashi Yamamoto
DOI:10.1002/anie.201408732
日期:2014.12.8
The first catalytic enantioselective aminolysis of trans‐2,3‐epoxy alcohols has been accomplished. This stereospecific ring‐opening process was efficiently promoted by a tungsten/bis(hydroxamic acid) catalytic system, furnishing various anti‐3‐amino‐1,2‐diols with excellent regiocontrol and high enantioselectivities (up to 95 % ee). Moreover, virtually enantiopure 3‐amino‐1,2‐diols could be obtained
反式-2,3-环氧醇的首次催化对映选择性氨解已经完成。钨/双(异羟肟酸)催化体系有效地促进了这种立体有择的开环过程,提供了具有出色区域控制和高对映选择性(高达 95% ee)的各种抗-3-氨基-1,2-二醇 。此外,通过使用手性催化剂的两个反应的顺序组合,可以获得几乎对映体纯的 3-氨基-1,2-二醇。