An Effective Method to Introduce Carbon Acid Functionality: 2,2-Bis(trifluoromethanesulfonyl)ethylation Reaction of Arenes
作者:Hikaru Yanai、Hiroshi Ogura、Haruhiko Fukaya、Akira Kotani、Fumiyo Kusu、Takeo Taguchi
DOI:10.1002/chem.201102023
日期:2011.10.10
Introducing strong acids: The reaction of electron‐rich arenes with Tf2CHCH2CHTf2 (Tf=trifluoromethanesulfonyl; triflyl) smoothly gave 2,2‐bis(triflyl)ethylated arenes. This reaction provides a convenient methodology for the introduction of a Tf2CH group, which is known to be a strongly Brønsted acidic functionality, to organic compounds in a regioselective manner (see scheme). On the basis of this
引入强酸:富电子芳烃与Tf 2 CHCH 2 CHTf 2(Tf =三氟甲磺酰基; triflyl)的反应平稳地生成了2,2-双(triflyl)乙基化的芳烃。该反应提供了一种方便的方法,用于以区域选择性方式将Tf 2 CH基团引入到有机化合物中,该基团具有很强的布朗斯台德酸性官能度(参见方案)。基于该反应,开发了具有显着活性和热稳定性的碳酸催化剂。