1: pyridine / diethyl ether / 2 h / Ambient temperature 2: 99 percent / CH2Cl2 / 1 h / Ambient temperature 3: sodium methoxide / CH2Cl2; methanol / 0.17 h / 0 - 5 °C 4: triethylamine / bis(benzonitrile)palladium dichloride / acetonitrile / 1 h / Ambient temperature 5: potassium hydroxide / methanol; H2O / 0.5 h / Heating View Scheme