4-Nitrophenylsulfur Pentafluoride

A 25 mL Schlenk tube equipped with a magnetic stir bar is charged with (allylPdCl)₂ (2.5 mol%), PCy₃·HBF₄ (7.5 mol%), and K₂CO₃ (1.8 equiv.). The reaction tube is evacuated and bakfilled with N₂ (4 times), then 2,2-dimethylbutyric acid (0.3 equiv.), bromobenzene (2.5 equiv.), toluene (1.0 mL) and 4-nitrophenylsulfur pentafluoride (0.3 mmol, 1.0 equiv.) are added subsequently. The sealed tube is screw capped and heated to 130 °C for 15h. The reaction vessel is then cooled to room temperature, and the reaction mixture is concentrated in vacuo directly. The resulting residue is purified with silica gel chromatography to afford 2'-nitro-[1,1':3',1''-terphenyl]-5'-yl sulfurpentafluoride in 87% yield.