1: triethylamine / N,N-dimethyl-formamide / 14 h / 55 °C / |Inert atmosphere; |Large scale 2: ammonium acetate / propan-1-ol; ethanol / 1 h / 50 °C / |Inert atmosphere; |Large scale 3: sodium cyanoborohydride; alpha-hydroxyethanoic acid / methanol / 20 °C / |Inert atmosphere; |Large scale 4: ammonia / methanol / 22 h / 70 °C / 4897.34 Torr / |Sealed tube; |Large scale View Scheme

1: triethylamine / N,N-dimethyl-formamide / 14 h / 55 °C / |Inert atmosphere; |Large scale 2: ammonium acetate / propan-1-ol; ethanol / 1 h / 50 °C / |Inert atmosphere; |Large scale 3: sodium cyanoborohydride; alpha-hydroxyethanoic acid / methanol / 20 °C / |Inert atmosphere; |Large scale 4: ammonia / methanol / 22 h / 70 °C / 4897.34 Torr / |Sealed tube; |Large scale 5: hydrogenchloride / isopropyl alcohol / 4 h / 50 °C / |Large scale 6: benzotriazol-1-ol; 4-methyl-morpholine; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / water; ethyl acetate; 1-methyl-pyrrolidin-2-one / 16 h / 20 - 24 °C 7: acetic acid; 2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; NaMnO4 / tert-butyl methyl ether; water / 12 °C View Scheme