thionyl chloride in chloroform T=40°C; 2 h;

1: 5-cyclopropyl-1H-tetrazole With 18-crown-6 ether; potassium tert-butylate in tetrahydrofuran; 1,4-dioxane 0.25 h; 2: 2-(chloromethyl)-4-fluoroaniline in tetrahydrofuran; 1,4-dioxane T=60°C; 18 h;