Multi-step reaction with 6 steps
1.1: hydrogenchloride / 1,4-dioxane / 1 h / 20 °C / Inert atmosphere
2.1: benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; triethylamine / N,N-dimethyl-formamide / 24 h / Inert atmosphere
3.1: hydrogenchloride / 1,4-dioxane / 1.5 h / 20 °C / Inert atmosphere
4.1: benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; triethylamine / N,N-dimethyl-formamide / 0.05 h / 20 °C / Inert atmosphere
4.2: 24 h / Inert atmosphere
5.1: hydrogenchloride / 1,4-dioxane; methanol / 1 h / 20 °C / Inert atmosphere
5.2: 0.05 h / Inert atmosphere
5.3: 18 h / 20 °C / Inert atmosphere
6.1: hydrogenchloride / 1,4-dioxane / 2 h / 20 °C / Inert atmosphere
With
hydrogenchloride; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; triethylamine;
In
1,4-dioxane; methanol; N,N-dimethyl-formamide;
DOI:10.1016/j.bmcl.2011.09.079