1,1'-carbonyldiimidazole in tetrahydrofuran 13 h;

1: pyridine With fluorine in dichloromethane T=-78 - -50°C; 2: isocyano-acetic acid ethyl ester in dichloromethane T=-50 - 0°C; 4 h;

1: pyridine With fluorine in chloroform T=-78 - -60°C; 2: isocyano-acetic acid ethyl ester With trimethylsilylazide in chloroform T=-50 - 0°C;

triethylamine; dicyclohexyl-carbodiimide in tetrahydrofuran; acetonitrile 72 h;

in 1,4-dioxane T=200°C; Microwave irradiation;

sodium tris(acetoxy)borohydride T=-40 - 0°C; 7 h;

1: pyridine-2-carboxylic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine in dichloromethane 0.166667 h; Molecular sieveCooling with iceInert atmosphere; 2: glycine ethyl ester hydrochloric acid in dichloromethane; N,N-dimethyl-formamide T=20°C;

chloroform

trichlorophosphate HeatingMicrowave irradiation;