Multi-step reaction with 9 steps
1.1: triethylamine / tetrahydrofuran / 1.5 h / 20 °C / Cooling with ice
1.2: 1 h / Cooling with ice
2.1: ethanol / 2 h / Reflux
2.2: 1 h / Reflux
3.1: acetic acid; dihydrogen peroxide / water; dichloromethane / 1.5 h / 20 - 35 °C
4.1: caesium carbonate; tetrakis(triphenylphosphine) palladium(0) / 1,4-dioxane / 18 h / Inert atmosphere; Reflux
5.1: N,N-dimethyl-formamide; thionyl chloride / dichloromethane / 2 h / 20 °C / Cooling with ice
6.1: N-ethyl-N,N-diisopropylamine / acetonitrile / 70 - 80 °C
7.1: 5 h / Reflux
8.1: diphenyl phosphoryl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / tetrahydrofuran / 3 h / Inert atmosphere; Reflux
9.1: triphenylphosphine; water / tetrahydrofuran / 20 °C
With
tetrakis(triphenylphosphine) palladium(0); thionyl chloride; diphenyl phosphoryl azide; water; dihydrogen peroxide; caesium carbonate; acetic acid; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine; N-ethyl-N,N-diisopropylamine; N,N-dimethyl-formamide; triphenylphosphine;
In
tetrahydrofuran; 1,4-dioxane; ethanol; dichloromethane; water; acetonitrile;