1: 1.) Mg, I2, 2.) ZnCl2, 3.) NiCl2*1,2-bis(diphenylphosphino)ethane 2: 99 percent / 1.1 M tetrabutylammonium fluoride / tetrahydrofuran / 1.5 h / Ambient temperature 3: 79 percent / 2 N NaOH / methanol / 8 h / Heating View Scheme

Multi-step reaction with 2 steps 1: 1.) Mg, I2, 2.) ZnCl2, 3.) NiCl2*1,2-bis(diphenylphosphino)ethane2: 99 percent / 1.1 M tetrabutylammonium fluoride / tetrahydrofuran / 1.5 h / Ambient temperature