Multi-step reaction with 5 steps
1.1: ammonia / 5 h / 35 - 40 °C / Inert atmosphere; Cooling with acetone-dry ice
1.2: 1 h / 35 °C / Inert atmosphere; Cooling with acetone-dry ice
1.3: Inert atmosphere
2.1: 1H-imidazole; iodine; triphenylphosphine / dichloromethane / 4 h / 0 °C / Inert atmosphere; Darkness
3.1: N,N-dimethyl-formamide / 10 h / 70 °C / Inert atmosphere
4.1: sodium hydroxide / methanol; water / 7 h / Inert atmosphere; Reflux
5.1: triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate / N,N-dimethyl-formamide / 24 h / 20 °C / Inert atmosphere
5.2: 12 h / 20 °C / Inert atmosphere
With
1H-imidazole; ammonia; iodine; triethylamine; triphenylphosphine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; sodium hydroxide;
In
methanol; dichloromethane; water; N,N-dimethyl-formamide;
DOI:10.1002/anie.201300683