Regioselective Copper-Catalyzed Amination of Chlorobenzoic Acids: Synthesis and Solid-State Structures of <i>N</i>-Aryl Anthranilic Acid Derivatives
作者:Xuefeng Mei、Adam T. August、Christian Wolf
DOI:10.1021/jo0518809
日期:2006.1.1
amination of 2-chlorobenzoic acids with aniline derivatives has been developed. The method eliminates the need for acid protection and produces a wide range of N-aryl anthranilic acid derivatives in up to 99% yield. The amination was found to proceed with both electron-rich and electron-deficient aryl chlorides and anilines and also utilizes sterically hindered anilines such as 2,6-dimethylaniline and
开发了一种化学和区域选择性铜催化交叉偶联反应,用于 2-氯苯甲酸与苯胺衍生物的有效胺化。该方法无需酸保护,可生产多种N-芳基邻氨基苯甲酸衍生物,收率高达 99%。发现胺化可以用富电子和缺电子的芳基氯和苯胺进行,并且还利用空间位阻苯胺,例如2,6-二甲基苯胺和2-叔丁基苯胺。已在固态下研究了适当取代的N-芳基邻氨基苯甲酸的构象异构现象。七种邻氨基苯甲酸衍生物的晶体学分析表明形成了两种不同的超分子结构,表现出反式-反式和前所未有的反式-顺式二聚体结构。