Multi-step reaction with 10 steps
1: 93 percent / NaBH4 / methanol
2: Dess-Martin periodination reagent / CH2Cl2 / 1 h
3: 44 percent / tetrahydrofuran; diethyl ether / -78 deg C, 15 min; RT, 5 h
4: 98 percent / imidazole / dimethylformamide / 40 °C
5: 79 percent / NaH / tetrahydrofuran
6: 89 percent / 40 percent aq. HF / acetonitrile
7: 97 percent / imidazole / dimethylformamide / 3 h
8: 60 percent / Dess-Martin periodination reagent / CH2Cl2 / 1 h
9: 80 percent / cyclohexane / 1 h / Irradiation
10: 1) NaH (80 percent in oil) / 1) DMF, 1 h, -30 deg C, 2) DMF, RT, overnight
With
1H-imidazole; sodium tetrahydroborate; hydrogen fluoride; sodium hydride; Dess-Martin periodane;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; cyclohexane; N,N-dimethyl-formamide; acetonitrile;
DOI:10.1002/(SICI)1522-2675(19981007)81:10<1803::AID-HLCA1803>3.0.CO;2-4