1: With 2,3-dimethylbutane-2,3-diol; dimethylsulfide borane complex in 1,4-dioxane T=20°C; 2: With triethylamine; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in 1,4-dioxane T=80°C; 3: T=100°C; 18 h;

C22H46N4; palladium diacetate; Ca(OH)2 in N,N-dimethyl acetamide; water T=20 - 50°C; 24 h; Inert atmosphere;