Facile construction of symmetric biaryls using (BeDABCO)₂Pd₂Cl₆ as an efficient and highly active catalyst under microwave irradiation

An efficient catalytic system using (BeDABCO) 2 Pd 2 Cl 6 (BeDABCO, benzyl‐1,4‐diazabicyclo[2.2.2]octane) was developed for the homo‐coupling reaction of various aryl halides. Due to the combination of ionic homogeneous metal catalyst and microwave irradiation, symmetric biaryls were produced in excellent yields and short reaction times in N ‐methyl‐2‐pyrrolidone at 120 °C. BeDABCO as an efficient ligand and also a quaternary ammonium salt had...