Multi-step reaction with 12 steps
1.1: hydrogenchloride / 1,4-dioxane; methanol / 2 h / Cooling with ice
2.1: water / 20 °C / Alkaline conditions
3.1: osmium(VIII) oxide; 4-methyl-morpholine / water; acetone / 34 h / 20 - 40 °C
4.1: sodium periodate / tetrahydrofuran; water / 0 - 20 °C
5.1: boron trifluoride diethyl etherate / tetrahydrofuran / 0.17 h / -78 °C
5.2: 2.5 h / -78 - 20 °C
6.1: sodium hydroxide; water / tetrahydrofuran / 24 h / 20 °C
7.1: triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; 1-hydroxy-7-aza-benzotriazole / N,N-dimethyl-formamide / 0.08 h
7.2: 24 h / 0 - 20 °C
8.1: pyridine / 12 h
9.1: hydrogenchloride / 1,4-dioxane / 2 h / 0 °C
10.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / dichloromethane / 0.17 h / 0 °C
11.1: hydrogenchloride / 1,4-dioxane / 2 h / Cooling with ice
12.1: 4-methyl-morpholine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate / dichloromethane / 0.5 h / Cooling with ice
12.2: 20 °C
With
4-methyl-morpholine; pyridine; hydrogenchloride; sodium periodate; osmium(VIII) oxide; 1-hydroxy-7-aza-benzotriazole; boron trifluoride diethyl etherate; water; triethylamine; N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; sodium hydroxide;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; water; N,N-dimethyl-formamide; acetone;
DOI:10.1002/cjoc.201200984