Synthesis of Hindered Anilines: Copper-Catalyzed Electrophilic Amination of Aryl Boronic Esters
作者:Richard P. Rucker、Aaron M. Whittaker、Hester Dang、Gojko Lalic
DOI:10.1002/anie.201200480
日期:2012.4.16
No longer a hindrance: Copper‐catalyzed electrophilic amination of aryl boronic esters is accomplished under mild reaction conditions using 2.5–5.0 mol % of a catalyst derived from copper tert‐butoxide and Xantphos ligand (see scheme). The reaction tolerates a wide range of functional groups and can be used to prepare some of the most hindered anilines made to date.
不再是障碍:芳基硼酸酯的铜催化亲电胺化反应可在温和的反应条件下,使用2.5-5.0 mol%的叔丁醇铜和Xantphos配体衍生的催化剂完成(参见方案)。该反应可耐受各种官能团,可用于制备迄今为止制备的某些受阻最大的苯胺。