1: 2,6-di-fluoro-pyridine With lithium diisopropyl amide in tetrahydrofuran T=-78°C; 2 h; Cooling with acetone-dry ice; 2: 4-methylphenylcyanate in tetrahydrofuran T=-78°C; 0.666667 h; Cooling with acetone-dry ice;

ammonium hydroxide in water T=88°C; 12 h;