Multi-step reaction with 11 steps
1.1: lithium aluminium tetrahydride / diethyl ether / 0.25 h / -78 °C / Inert atmosphere
2.1: 1H-imidazole / dichloromethane / 1.5 h / 0 - 20 °C / Inert atmosphere
3.1: platinum(IV) oxide; hydrogen / tetrahydrofuran / 4 h / 20 °C
4.1: ozone / methanol; dichloromethane / -78 °C
4.2: 1.25 h / -78 - 20 °C
5.1: piperidine; acetic acid / diethyl ether / 20 h / 70 °C / Inert atmosphere
6.1: sodium tetrahydroborate / methanol / 0.25 h / 0 °C
7.1: mercury(II) diacetate / 24 h / 60 °C / Inert atmosphere
8.1: toluene / 16 h / 173 °C / Inert atmosphere
9.1: L-proline / dichloromethane / 3 h / 20 °C / Inert atmosphere
10.1: 1,8-diazabicyclo[5.4.0]undec-7-ene; lithium iodide / tetrahydrofuran / 0.5 h / 20 °C / Inert atmosphere
10.2: 14 h / 80 °C / Inert atmosphere
11.1: ozone / dichloromethane / -78 °C
11.2: 0.5 h / -78 - 20 °C
With
piperidine; 1H-imidazole; platinum(IV) oxide; sodium tetrahydroborate; lithium aluminium tetrahydride; mercury(II) diacetate; hydrogen; ozone; acetic acid; 1,8-diazabicyclo[5.4.0]undec-7-ene; L-proline; lithium iodide;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; toluene;
8.1: Claisen rearrangement / 9.1: Knoevenagel condensation / 10.1: Heck reaction / 10.2: Heck reaction;
DOI:10.1002/anie.201200515