Multi-step reaction with 7 steps
1: 1,8-diazabicyclo[5.4.0]undec-7-ene / ethanol / 120 °C / Inert atmosphere
2: trichlorophosphate / 0.5 h / 100 °C / Inert atmosphere
3: sodium hydride / N,N-dimethyl-formamide / 0.5 h / 0 °C / Inert atmosphere
4: O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 4 h / 0 - 20 °C / Inert atmosphere
5: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2.5 h / 0 °C / Inert atmosphere
6: N-ethyl-N,N-diisopropylamine / 1,4-dioxane / 1 h / 140 °C / Inert atmosphere; Microwave irradiation
7: sodium azide / N,N-dimethyl-formamide / 1.5 h / 0 - 20 °C / Inert atmosphere
With
sodium azide; sodium hydride; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; 1,8-diazabicyclo[5.4.0]undec-7-ene; N-ethyl-N,N-diisopropylamine; 3-chloro-benzenecarboperoxoic acid; trichlorophosphate;
In
1,4-dioxane; ethanol; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1016/j.bmc.2011.05.038