1: (Z)-2,3,3-trifluoro-1-iodoprop-1-ene With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.5 h; 2: With ZnCl2*TMEDA in tetrahydrofuran; hexane T=-78 - 20°C; 0.75 h; 3: 1-chloro-4-iodobenzene With tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran; hexane T=60°C; 4 h;