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, H-1-NMR, and C-13-NMR spectra.