Suzuki-Miyaura Cross-Coupling Reaction of Naphthyl Triflate with Indole Boronic Acids Catalyzed by a Recyclable Polymer-Supported N-Heterocyclic Carbene-Palladium Complex Catalyst: Synthesis of Naphthalene-Linked Bis-Heterocycles

In this study, the Suzuki–Miyaura cross‐coupling reaction of naphthyl triflate with indole boronic acids catalyzed by a recyclable polymer‐supported Pd–NHC complex catalyst is presented. The polymer‐supported catalyst can be reused several times retaining high activity for the transformation. The structures of all the synthesized compounds were established by elemental analysis and from their mass, 1H‐NMR, and 13C‐NMR spectra.