Domino CN Coupling/Annulation versus CN Coupling/ Hydroamination of 2-Alkynyl-3-bromobenzothiophenes and 2-Alkynyl-3-bromothiophenes. Highly Efficient Synthesis of Benzothieno[3,2-b]quinolines and Thieno[3,2-b]pyrroles
作者:Ghazwan Ali Salman、Munawar Hussain、Viktor Iaroshenko、Alexander Villinger、Peter Langer
DOI:10.1002/adsc.201000709
日期:2011.2.11
palladium-catalyzed reaction of 2-alkynyl-3-bromothiophenes with anilines afforded thienopyrroles by a domino CN coupling/hydroamination process, the reaction of 2-alkynyl-3-bromobenzothiophenes with anilines resulted, under identical conditions, in the formation of benzothienoquinolines by a domino CN coupling/annulation process. The electronic character of the aniline also has an influence on the product distribution
钯催化的2-炔基-3-溴噻吩与苯胺的反应是通过多米诺CN偶联/加氢胺化过程得到的噻吩并吡咯,而2-炔基-3-溴苯并噻吩与苯胺的反应在相同条件下导致了苯并噻吩并喹啉的形成。通过多米诺骨牌CN耦合/环化过程。苯胺的电子特性也影响产品的分布。