Multi-step reaction with 5 steps
1.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 68 h / 0 - 22 °C / Inert atmosphere
2.1: water; lithium hydroxide / tetrahydrofuran / 1.5 h / 22 °C
2.3: pH 3
3.1: O-(1H-1,2,3-triazolo[4,5-b]pyridin-1-yl)-1,1,3,3-tetraethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0.42 h / 22 °C / Inert atmosphere
3.2: 14.5 h / Inert atmosphere
4.1: formic acid / 2.5 h / 22 °C
4.2: 0 °C / pH 9
5.1: O-(1H-1,2,3-triazolo[4,5-b]pyridin-1-yl)-1,1,3,3-tetraethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 5 h / 22 °C / Inert atmosphere
With
O-(1H-1,2,3-triazolo[4,5-b]pyridin-1-yl)-1,1,3,3-tetraethyluronium hexafluorophosphate; formic acid; water; N-ethyl-N,N-diisopropylamine; 3-chloro-benzenecarboperoxoic acid; lithium hydroxide;
In
tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1002/anie.201006781