sodium hydride in tetrahydrofuran; mineral oil T=20°C;

1: 2-(4-Aminophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane With sodium hydride in N,N-dimethyl-formamide T=0°C; 0.5 h; 2: ethyl iodide in N,N-dimethyl-formamide T=0 - 20°C; 72 h;

1: 4-(N,N-diethylamino)-bromobenzene With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 1 h; Inert atmosphere; 2: 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane in tetrahydrofuran; hexane T=20°C; 12 h; Inert atmosphere;