Multi-step reaction with 12 steps
1: SeO2 / ethanol / 3 h / Heating
2: 2 percent / NaBH4 / diethyl ether; ethanol / 30 h / 0 °C
3: 79 percent / D-(-)-diisopropyl tartrate (D-(-)-DIPT), Ti(Oi-Pr)4, tert.-butyl hydroperoxide (TBHP) / CH2Cl2 / 4 h / -20 °C
5: 85 percent / 18 M H2SO4 / tetrahydrofuran; H2O / 30 h / 0 °C
6: 96 percent / p-toluenesulfonic acid / 2 h / Ambient temperature
7: 93 percent / K2CO3 / methanol / 1 h / Ambient temperature
8: CCl4, PPh3 / benzene / 24 h / Heating
9: dimethylformamide / 0.5 h / 0 °C
10: 91 percent / 1 M aq. HCl / methanol / 12 h / Ambient temperature
11: 1) NaH / 1) DMF, 0 deg C, 15 min, 2) room temp., 12 h
12: 98 percent / i-Pr2NEt / CH2Cl2 / 12 h / Ambient temperature
With
titanium(IV) isopropylate; hydrogenchloride; tert.-butylhydroperoxide; tetrachloromethane; sodium tetrahydroborate; selenium(IV) oxide; sulfuric acid; sodium hydride; potassium carbonate; D-(-)-diisopropyl tartrate; toluene-4-sulfonic acid; N-ethyl-N,N-diisopropylamine; triphenylphosphine;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; dichloromethane; water; N,N-dimethyl-formamide; benzene;
DOI:10.1021/jo00304a022