Room‐Temperature Nickel‐Catalysed Suzuki–Miyaura Reactions of Aryl Sulfonates/Halides with Arylboronic Acids

Abstract

Abstract Room‐temperature Suzuki–Miyaura aryl–aryl cross‐coupling reactions have been achieved in high yields by using an easily accessible, air‐stable Ni II –(σ‐aryl) complex as precatalyst without either the pretreatment of organometallic reagents or the presence of external reductants. The Ni II complex, in conjunction with monophosphane ligands such as PCy 3 · HBF 4 or PPh 3 , allowed the efficient cross‐coupling of aryl sulfonates (OTs, OMs) and/or halides (Cl, Br, I) with arylboronic acids at room temperature in toluene/water in the presence of K 2 CO 3 as base.