1: (+/-)-1-bromo-4-(1-ethoxyethyl)-3-methoxybenzene With n-butyllithium in tetrahydrofuran; hexane T=-78°C; Metallation; 2 h; 2: N,N-dimethyl-formamide in tetrahydrofuran; hexane T=-78 - 20°C; Condensation; 18 h; 3: With hydrogenchloride in water Hydrolysis; 0.5 h;