One-Pot Synthesis of Furo- or Thienoquinolines through Sequential Imination and Intramolecular Palladium-Catalyzed Direct Arylation
作者:Kassem Beydoun、Henri Doucet
DOI:10.1002/ejoc.201201142
日期:2012.12
The sequential imination and intramolecular palladium-catalyzed direct arylation of thiophene-3-carbaldehyde or furan-3-carbaldehyde with 2-haloanilines provided a one-pot access to furo- or thienoquinolines in high yields with H2O and HBr as the major waste. Both electron-withdrawing and -donating substituents on the 2-haloaniline derivatives were tolerated. These furo- or thienoquinoline derivatives
噻吩-3-甲醛或呋喃-3-甲醛与 2-卤代苯胺的顺序亚胺化和分子内钯催化直接芳基化提供了以 H2O 和 HBr 为主要废物的高产率的一锅法获得呋喃或噻吩并喹啉。2-卤代苯胺衍生物上的吸电子和供电子取代基都是可以容忍的。这些呋喃基或噻吩并喹啉衍生物可用于呋喃基或噻吩基C-5位的直接芳基化反应,并以高产率得到多种相应的芳基化产物。