Multi-step reaction with 13 steps
1.1: 20.5 g / diethyl ether / 5 h / -78 - 25 °C
2.1: 28.3 g / imidazole / dimethylformamide / 4 h / 25 °C
3.1: O3 / CH2Cl2 / 4 h / -78 °C
3.2: 64 percent / PPh3 / diethyl ether / 3 h / -78 - 25 °C
4.1: 18.5 g / diethyl ether / 5 h / -78 - 25 °C
5.1: imidazole / dimethylformamide / 4 h / 25 °C
6.1: 36 percent / Hoveyda-Grubbs' catalyst / CH2Cl2 / 18 h / 25 °C
7.1: Et2BOMe / tetrahydrofuran; methanol / 0.25 h / -78 °C
7.2: 89 percent / NaBH4 / tetrahydrofuran; methanol; various solvent(s) / 3 h / -78 °C
8.1: 89 percent / imidazole / dimethylformamide / 8 h / 25 °C
9.1: 75 percent / liquid NH3; calcium / tetrahydrofuran; propan-2-ol / 1 h / -78 °C
10.1: 87 percent / NaHCO3; Dess-Martin periodinane / CH2Cl2 / 0.5 h / 25 °C
11.1: diisopropylamine; n-BuLi / tetrahydrofuran; hexane; toluene / 0.5 h / -78 °C
11.2: 85 percent / tetrahydrofuran; hexane; toluene / 3 h / -78 - 25 °C
12.1: 77 percent / pyridinium p-toluenesulfonate / ethanol / 3 h / 25 °C
13.1: 93 percent / diethyl azodicarboxylate; PPh3 / tetrahydrofuran / 1 h / 25 °C
With
1H-imidazole; n-butyllithium; diethyl methoxy borane; ammonia; pyridinium p-toluenesulfonate; sodium hydrogencarbonate; calcium; Dess-Martin periodane; ozone; diisopropylamine; triphenylphosphine; diethylazodicarboxylate;
Hoveyda-Grubbs catalyst second generation;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; hexane; dichloromethane; N,N-dimethyl-formamide; isopropyl alcohol; toluene;
13.1: Mitsunobu reaction;
DOI:10.1021/ja068053p