Multi-step reaction with 10 steps
1.1: sodium azide / N,N-dimethyl-formamide / 4 h / 60 °C
2.1: trifluoroacetic acid / dichloromethane / 2 h / 0 - 20 °C
3.1: thionyl chloride / dichloromethane / 3 h / 60 °C
3.2: 2 h / 0 - 20 °C
4.1: triphenylphosphine / tetrahydrofuran / 2 h / 20 °C
4.2: 5 h / 90 °C / Heating / reflux
5.1: triethylamine / tetrahydrofuran; methanol / 0 - 20 °C
6.1: Lawessons reagent / 1,4-dioxane / 1 h / 60 °C
7.1: toluene / 2 h / 110 °C / Heating / reflux
8.1: potassium carbonate / acetonitrile / 4 h / 75 °C
9.1: trifluoroacetic acid / dichloromethane / 1 h
9.2: 1 h / 0 - 20 °C
10.1: Lawessons reagent / 1,4-dioxane / 0.33 h / 60 °C
With
Lawessons reagent; thionyl chloride; sodium azide; potassium carbonate; triethylamine; triphenylphosphine; trifluoroacetic acid;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; N,N-dimethyl-formamide; toluene; acetonitrile;