Palladium(II)-Catalyzed Tandem Synthesis of Acenes Using Carboxylic Acids as Traceless Directing Groups
作者:Kiho Kim、Dhananjayan Vasu、Honggu Im、Sungwoo Hong
DOI:10.1002/anie.201603661
日期:2016.7.18
straightforward synthetic strategy for generating useful anthracene derivatives was developed involving palladium(II)‐catalyzed tandem transformation with carboxylic acids as traceless directing groups. Carboxyl‐directed C‐H alkenylation, carboxyl‐directed secondary C‐H activation and rollover, intramolecular C−C bond formation, and decarboxylative aromatization are proposed as the key steps in the tandem
开发了一种简单的合成策略来生成有用的蒽衍生物,该策略涉及钯(II)催化的串联转化,其中羧酸为无痕导向基团。羧基定向的C H链烯基化,羧基定向的第二C H活化和侧翻,分子内C C键的形成以及脱羧芳构化被认为是串联反应途径中的关键步骤。这种新颖的合成途径利用了广泛的底物,并提供了一种方便的合成工具,可以接触并苯。