Multi-step reaction with 8 steps
1.1: trifluoromethylsulfonic anhydride; 2,6-di-tert-butyl-4-methylpyridine / dichloromethane
2.1: lithium naphthalenide / tetrahydrofuran / 1 h / -40 °C
3.1: oxalyl dichloride; dimethyl sulfoxide / dichloromethane / 1 h / -78 °C
4.1: hydrogenchloride / tetrahydrofuran; water / 1.5 h / 20 - 50 °C
4.3: CSA / 0.17 h / 90 °C
5.1: sodium hydride; tetra-(n-butyl)ammonium iodide / N,N-dimethyl-formamide / 18 h / 20 °C
6.1: hydrogenchloride / acetone / 24 h / Reflux
7.1: N,N,N,N,-tetramethylethylenediamine; potassium hexamethylsilazane / tetrahydrofuran; toluene / 0.5 h / -78 °C
7.2: -78 - 0 °C
8.1: water; samarium diiodide / tetrahydrofuran / 0.08 h / 20 °C
With
hydrogenchloride; 2,6-di-tert-butyl-4-methylpyridine; samarium diiodide; oxalyl dichloride; N,N,N,N,-tetramethylethylenediamine; trifluoromethylsulfonic anhydride; water; tetra-(n-butyl)ammonium iodide; potassium hexamethylsilazane; sodium hydride; dimethyl sulfoxide;
In
tetrahydrofuran; dichloromethane; water; N,N-dimethyl-formamide; acetone; toluene;
3.1: |Swern Oxidation / 3.2: |Swern Oxidation;
DOI:10.1021/jo302362b