Multi-step reaction with 13 steps
1: 100 percent / B2H6*THF / Ambient temperature
2: 96 percent / Dess-Martin periodinane / CH2Cl2 / Ambient temperature
3: 98 percent / Ph3P / CH2Cl2 / 0.5 h / 0 °C
4: 90 percent / DIBALH / toluene; hexane / 1.) -78 deg C, 10 min; 2.) 0 deg C, 30 min
5: 90 percent / Et3N, DMAP / dimethylformamide / 72 h / Ambient temperature
6: 92 percent / nBuLi / tetrahydrofuran; hexane / 0.17 h / -78 °C
7: 49 percent / 1.) DIBALH / hexane; tetrahydrofuran / 1.) 50 deg C, 2 h; 2.) -20 deg C, 10 min; RT, 30 min
8: 92 percent / p-toluenesulfonic acid / CH2Cl2; methanol / 2 h / Ambient temperature
9: 90 percent / Dess-Martin's periodinane / CH2Cl2 / 0.5 h / Ambient temperature
10: 51 percent / nBuLi / diethyl ether; hexane / 1.) 0 deg C, 10 min; 2.) -42 deg C, 135 min
11: 6percent Na(Hg) / methanol; tetrahydrofuran / 3.5 h / -35 °C
12: LiOH / tetrahydrofuran; H2O / 18 h / Ambient temperature
13: Li/NH3(l) / ethanol / 0.5 h / -78 °C
With
dmap; lithium hydroxide; n-butyllithium; sodium amalgam; B2H6-THF; ammonia; lithium; diisobutylaluminium hydride; Dess-Martin periodane; toluene-4-sulfonic acid; triethylamine; triphenylphosphine;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; hexane; dichloromethane; water; N,N-dimethyl-formamide; toluene;
DOI:10.1016/S0040-4020(01)88025-X