1: N-methyl-benzamide With 2-fluoro-pyridine; trifluoromethylsulfonic anhydride in dichloromethane T=-78 - 0°C; Inert atmosphere; 2: n-butyl-magnesium bromide With cerium(III) chloride heptahydrate in tetrahydrofuran; dichloromethane T=-78°C; 1 h; Inert atmosphere; 3: With sodium tetrahydroborate in tetrahydrofuran; methanol; dichloromethane T=20°C; 3 h; Inert atmosphere;

strontium in tetrahydrofuran T=20°C; Barbier-type alkylation; 2 h;

in tetrahydrofuran T=-60°C; 3 h;

toluene