1: 2-(2-fluorophenyl)acetic acid With 1,2-disodiostilbene in tetrahydrofuran T=0°C; 2 h; Inert atmosphere; 2: 2-iodo-propane in tetrahydrofuran T=0 - 20°C; Inert atmosphere; 3: With hydrogenchloride in water regioselective reaction;