A palladium-catalyzed tandem addition/cyclization of 2-(2-aminoaryl)acetonitriles with arylboronic acids has been developed for the first time, achieving a new strategy for direct construction of indole skeletons. This system shows good functional group tolerance and remarkable chemoselectivity. In particular, the halogen (e.g., bromo and iodo) substituents are amenable to further synthetic elaborations
An efficient cascade methodology toward the synthesis of 2-substitutedindoles has been developed. The transformation proceeds via a palladium-catalyzed cross-coupling reaction of o-nitrobenzyl cyanides with boronic acids. The use of Fe as co-catalyst during the course of reaction employs significant enhancement in reaction rates. The developed protocol allows for the unprecedented use of arylboronic
已开发出一种用于合成 2-取代吲哚的高效级联方法。该转化通过钯催化的邻硝基苄基氰与硼酸的交叉偶联反应进行。在反应过程中使用 Fe 作为助催化剂显着提高了反应速率。开发的协议允许前所未有地使用芳基硼酸作为偶联伙伴来构建 2-取代吲哚。