Multi-step reaction with 16 steps
1: sulfuryl dichloride; potassium nitrate / acetonitrile / 4.5 h / 0 °C
2: triethylamine / tetrahydrofuran / 96 h / 20 °C
3: potassium hydroxide / methanol; water / 0.5 h / Reflux
4: diphenylphosphoranyl azide; triethylamine / 17 h / Reflux
5: N-iodo-succinimide; toluene-4-sulfonic acid / dichloromethane; acetonitrile / 144 h / 20 °C / Darkness
6: sodium hydride / mineral oil / 2.75 h / 0 - 20 °C
7: tri-n-butyl-tin hydride / benzene / Reflux; Inert atmosphere
8: sulfuric acid / 14 h / 0 °C
9: tetrahydrofuran / 16 h / Reflux
10: zinc / tetrahydrofuran; water / 33 h / Reflux
11: hydrogenchloride / 1,4-dioxane / 2 h / 20 °C
12: triethylamine / tetrahydrofuran / 3.33 h / 0 °C
13: sulfuric acid; potassium nitrate / 0.2 h / 0 °C
14: methanol; caesium carbonate / tetrahydrofuran / 1 h / 20 °C
15: toluene-4-sulfonic acid; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / N,N-dimethyl acetamide / 22 h / 20 °C
16: pyridine / dichloromethane / 0.33 h / 0 °C
With
pyridine; hydrogenchloride; methanol; N-iodo-succinimide; sulfuryl dichloride; sulfuric acid; diphenylphosphoranyl azide; tri-n-butyl-tin hydride; sodium hydride; caesium carbonate; toluene-4-sulfonic acid; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; potassium nitrate; triethylamine; potassium hydroxide; zinc;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; N,N-dimethyl acetamide; water; acetonitrile; mineral oil; benzene;
4: Curtius reaction;
DOI:10.1021/jm201717y