Multi-step reaction with 7 steps
1.1: n-butyllithium / tetrahydrofuran; hexane / 0.33 h / -78 °C / Inert atmosphere
1.2: 1 h / 0 °C / Inert atmosphere
1.3: 2 h / 20 °C / Inert atmosphere
2.1: boron trichloride / dichloromethane / 1 h / -78 °C / Inert atmosphere
2.2: 1 h / Reflux
3.1: Jones reagent / acetone / 4 h / 20 °C / Inert atmosphere
4.1: thionyl chloride / 3 h / 20 °C / Inert atmosphere
5.1: pyridine / tetrahydrofuran; dichloromethane / 36 h / 20 °C / Inert atmosphere
6.1: water; 2,3-dicyano-5,6-dichloro-p-benzoquinone / tetrahydrofuran / 4 h / 0 °C / Inert atmosphere
7.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / tetrahydrofuran; dimethyl sulfoxide / 5 h / 20 °C / Inert atmosphere
With
pyridine; Jones reagent; n-butyllithium; thionyl chloride; water; boron trichloride; 2,3-dicyano-5,6-dichloro-p-benzoquinone; 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione;
In
tetrahydrofuran; hexane; dichloromethane; dimethyl sulfoxide; acetone;
3.1: Jones oxidation;
DOI:10.1021/ol102678j