Pd-catalyzed intramolecular C–H addition of indoles bearing cyanohydrin components at the C(3), C(2), and N(1) positions to nitriles is described. A wide range of functionalized partially saturated carbazoles, tetrahydropyrido[1,2-a]indole, and carbazoles can be prepared in good to excellent yields under the optimal conditions. In addition, fused polycyclic indoles with seven- or eight-membered rings
描述了钯催化分子内C–H加成腈在腈C(3),C(2)和N(1)位置上带有氰醇成分的第一个例子。可以在最佳条件下以良好或优异的收率制备各种官能化的部分饱和咔唑,四氢吡啶并[1,2- a ]吲哚和咔唑。另外,也可以平滑地形成具有七元或八元环的稠合多环吲哚。