1: 1,2-dichloro-4-fluorobenzene With N,N,N',N,-tetramethylethylenediamine; sec.-butyllithium in tetrahydrofuran T=-78°C; 4 h; 2: methyl iodide in tetrahydrofuran T=-78 - 20°C; Product distribution / selectivity;

1: 1,2-dichloro-4-fluorobenzene With n-butyllithium in tetrahydrofuran T=-78 - -40°C; 0.5 h; 2: methyl trifluoromethanesulfonate in tetrahydrofuran T=-78 - 20°C; Product distribution / selectivity;

1: 1,2-dichloro-4-fluorobenzene With n-butyllithium in tetrahydrofuran T=-45 - -40°C; 2: dimethyl sulfate in tetrahydrofuran T=-55 - 20.5°C; 0.5 h; 3: With ammonia; water in tetrahydrofuran T=20 - 25°C; 0.5 h; Product distribution / selectivity;

1: 1,2-dichloro-4-fluorobenzene With lithium diisopropyl amide in tetrahydrofuran T=-60 - -40°C; 0.833333 h; 2: dimethyl sulfate in tetrahydrofuran T=-60 - 20°C; 3: With ammonia; water in tetrahydrofuran; diethyl ether Product distribution / selectivity;

1: With n-butyllithium in tetrahydrofuran T=-45 - 20°C; 1.25 - 1.66667 h; 2: With ammonia; water in tetrahydrofuran 0.5 h; Product distribution / selectivity;