Palladium-catalyzed ligand-regulated divergent synthesis of pyrrole[2,3-b]indoles and ureas from 2-ethynylanilines and isocyanides

A convenient and straight-forward entry to pyrrole[2,3- b ]indoles and ureas via ligand-controlled palladium-catalyzed chemoselective tandem reaction of 2-ethynylanilines and isocyanides has been established.