Multi-step reaction with 8 steps
1: 59 percent / NaBH4 / ethanol / 1) 25 deg C, 2 h, 2) 60 deg C, 4 h
2: 89 percent / imidazole / dimethylformamide / Ambient temperature
3: 95 percent / K2CO3, H2O2 / tetrahydrofuran; ethanol / 2 h / 25 °C
4: 82 percent / MnO2 / acetone / 4 h / Ambient temperature
5: 1) NaH / 1) DME, mineral oil, 10 min, reflux, 2) DME, 10 min, reflux
6: 96 percent / DIBAL / diethyl ether / 0.5 h / ice bath
7: 1) t-BuOK / 1) THF, 15 min, 2) THF, 25 deg C, 8 h
8: 88 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 2 h / 25 °C
With
1H-imidazole; manganese(IV) oxide; sodium tetrahydroborate; potassium tert-butylate; tetrabutyl ammonium fluoride; dihydrogen peroxide; sodium hydride; diisobutylaluminium hydride; potassium carbonate;
In
tetrahydrofuran; diethyl ether; ethanol; N,N-dimethyl-formamide; acetone;
DOI:10.1021/jo00065a014