Catalytic Asymmetric Bromine-Lithium Exchange: A New Tool to Build Axial Chirality
作者:Quentin Perron、Alexandre Alexakis
DOI:10.1002/adsc.201000517
日期:2010.10.4
We present here the first catalytic desymmetrization of the 2,2′,6,6′-tetrabromobiphenyl 1 and analogues, by a bromine-lithium exchange catalyzed by either diamines or diether derivatives (0.5 equiv.), yielding axially chiral compounds in high yield (up to 89%) and high enantioselectivity (up to 82%).
我们在这里介绍了通过二胺或二醚衍生物(0.5当量)催化的溴-锂交换对2,2',6,6'-四溴代二苯1及其类似物的第一次催化去对称化,以高收率得到轴向手性化合物(高达89%)和高对映选择性(高达82%)。