Elements of regiocontrol in the direct heteroarylation of indoles/pyrroles: synthesis of bi- and fused polycyclic heteroarenes by twofold or tandem fourfold C-H activation.

Elements of regiocontrol in the direct heteroarylation of indoles/pyrroles: synthesis of bi- and fused polycyclic heteroarenes by twofold or tandem fourfold C-H activation.