Synthesis of Indoles and Benzofurans Using a Graphene Oxide-Grafted Aminobisphosphine–Pd(II) Complex

[Image: see text] Indoles and benzofurans have been synthesized using a graphene oxide-grafted aminobisphosphine–Pd(II) complex (GO@PNP–Pd) under copper-free condition. A range of indole and benzofuran derivatives have been made by the reaction of N-protected 2-iodoanilines and 2-iodophenols with terminal acetylenes in presence of GO@PNP–Pd. The activity of the aminobisphosphine–Pd(II) complex remains the same under both homogeneous and heterogeneous conditions. Finally, the recycling ability of the immobilized catalyst (GO@PNP–Pd) has been examined for five consecutive runs with appreciable conversion.