Multi-step reaction with 11 steps
1: oxalyl dichloride / dichloromethane; tetrahydrofuran / 4 h / 25 °C
2: sodium azide / water; acetone / 0.03 h / 25 °C
3: trifluoroacetic acid / benzene / 21 h / 90 °C
4: potassium carbonate / methanol / 7.5 h / 25 °C
5: sulfuric acid; nitric acid / -5 °C
6: sulfuric acid / 1 h / 0 - 100 °C
7: 1-methyl-pyrrolidin-2-one / 0.67 h / 180 °C
8: acetonitrile / 5 h / 80 °C
9: tin(II) chloride dihdyrate / ethyl [2]alcohol / 3 h / 25 °C
10: toluene-4-sulfonic acid / 3 h / 120 °C
11: 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; palladium diacetate; potassium phosphate / toluene / 72 h / 90 °C / Inert atmosphere; Sealed tube
With
potassium phosphate; sodium azide; oxalyl dichloride; tin(II) chloride dihdyrate; sulfuric acid; nitric acid; palladium diacetate; potassium carbonate; toluene-4-sulfonic acid; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; trifluoroacetic acid;
In
tetrahydrofuran; 1-methyl-pyrrolidin-2-one; methanol; dichloromethane; ethyl [2]alcohol; water; acetone; toluene; acetonitrile; benzene;
3: |Curtius Rearrangement;
DOI:10.1002/cmdc.201300112