Multi-step reaction with 7 steps
1.1: water; barium(II) hydroxide / tetrahydrofuran / 3 h / 20 °C
2.1: O-(benzotriazol-1-yl )-N,N,N' ,N'-tetramethyluronium tetrafluoroborate / N,N-dimethyl-formamide / 0.08 h
2.2: 20 h / 20 °C / Inert atmosphere
3.1: water; barium(II) hydroxide / tetrahydrofuran / 3 h / 20 °C
4.1: O-(benzotriazol-1-yl )-N,N,N' ,N'-tetramethyluronium tetrafluoroborate / N,N-dimethyl-formamide / 0.08 h
4.2: 20 h / 20 °C / Inert atmosphere
5.1: water; barium(II) hydroxide / tetrahydrofuran / 3 h / 20 °C
6.1: 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 1,4-dioxane / 16 h / 20 °C / Inert atmosphere
7.1: hydrogen; palladium / 1,4-dioxane / 15 h
With
O-(benzotriazol-1-yl )-N,N,N' ,N'-tetramethyluronium tetrafluoroborate; water; hydrogen; palladium; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; barium(II) hydroxide;
In
tetrahydrofuran; 1,4-dioxane; N,N-dimethyl-formamide;
DOI:10.1002/ejoc.201200463