1: With n-butyllithium in tetrahydrofuran; hexane T=-75°C; 2 h; Inert atmosphere; 2: With hydrogenchloride; boric acid trimethyl ester in tetrahydrofuran; hexane 2.5 h;

1: 1-bromo-4-n-hexylbenzene With tert.-butyl lithium in tetrahydrofuran; pentane T=-78°C; 1 h; 2: boric acid trimethyl ester in tetrahydrofuran; pentane T=20°C; 2.25 h; 3: hydrogenchloride in tetrahydrofuran; water; ethyl acetate; pentane

hydrogenchloride; water in tetrahydrofuran; hexane 0.5 h;