1.1: t-BuMgCl; i-PrMgCl / tetrahydrofuran / -78 - 20 °C 1.2: 51 percent / tetrahydrofuran / 1 h / 20 °C 2.1: 92 percent / Bu3SnH; AIBN / benzene / 4 h / Heating View Scheme

1: 1-(p-chlorophenylsulfinyl)-1-(p-chlorophenylthio)-3-phenylpropane With 1,1-dimethylethylmagnesium chloride; isopropylmagnesium chloride in tetrahydrofuran T=-78 - 20°C; 2: methyl iodide With copper(l) iodide in tetrahydrofuran T=20°C; 1 h;