Palladium- and Copper-Catalyzed Site Selective Monoamination of Dibromobenzoic Acid
作者:Ioannis N. Houpis、Koen Weerts、Ulrike Nettekoven、Martine Canters、Hongyu Tan、Renmao Liu、Youchu Wang
DOI:10.1002/adsc.201000800
日期:2011.3.7
aryl bromides to afford selective ortho‐substituted derivatives (>99:1 selectivity; 60–80% yield) in the case of copper(I) catalysis. The solvent, base and equivalents of base were important factors in the success of this reaction. Complementary selectivity was achieved with palladium catalysis where the para‐substituted derivatives were produced selectively (>99% selectivity, 70–80% yield).
在铜(I)催化的情况下,羧酸根阴离子已被用作电子等效芳基溴的芳族胺化中的导向基团,以提供选择性的邻位取代衍生物(选择性> 99:1;产率为60-80%)。溶剂,碱和碱的当量是该反应成功的重要因素。互补催化是通过钯催化实现的,其中对位取代的衍生物是选择性产生的(> 99%的选择性,70-80%的产率)。