1: T=100°C; Inert atmosphereneat (no solvent); 2: With potassium carbonate 0.25 h; Inert atmosphereneat (no solvent); 3: With hydrogenchloride in water T=60°C; 0.5 h;

1: carbon dioxide; N-butylamine With 1,8-diazabicyclo[5.4.0]undec-7-ene in tetrahydrofuran T=20°C; 0.333333 h; Inert atmosphere; 2: 1-chlorobenzotriazole With triphenylphosphine in tetrahydrofuran 0.25 h; Inert atmosphere;