Multi-step reaction with 15 steps
1: 1.) diisopropylamine, BuLi / 1) THF, hexane, -78 deg C, 20 min; 2) THF, hexane, -78 deg C, 2 h, -50 deg C, 18 h
2: aq. HCl / methanol
3: 96 percent
4: 1.) hexamethyldisiloxane, P2O5, 2.) NaBH4 / 1) CHCl3, reflux, 10 h; 2) MeOH, -78 deg C, 1 h
5: 91 percent / LiAlH4 / tetrahydrofuran / 1.5 h / Ambient temperature
6: 98 percent / NaOEt / ethanol / 20 h / Heating
7: 1.) mercuric trifluoroacetate, anisole, 2.) NaBH4 / 1) EtOH, rt, 16-19 h; 2) EtOH, 0 deg C, 15 min
8: 68 percent / NaH / dimethylformamide / 3.25 h / 100 °C
9: 80 percent / NaBH4 / methanol / 1 h / Ambient temperature
10: 1.) SOCl2 / 1) rt, 1 h; 2) THF, -78 deg C, 2 h, -50 deg C, 14 h
11: 90 percent / aq. HCl / methanol / 2.5 h / Ambient temperature
12: aq. HCl / 1 h / 100 °C
13: aq. NaOH / methanol / 60 h / 80 - 85 °C
14: HCl / 7 h / Heating
15: 97 percent / CHCl3 / 6 h / Ambient temperature
With
hydrogenchloride; sodium hydroxide; sodium tetrahydroborate; lithium aluminium tetrahydride; n-butyllithium; thionyl chloride; Hexamethyldisiloxane; sodium ethanolate; mercury(II) trifluoroacetate; phosphorus pentoxide; sodium hydride; methoxybenzene; diisopropylamine;
In
tetrahydrofuran; methanol; ethanol; chloroform; N,N-dimethyl-formamide;
DOI:10.1016/S0040-4020(99)00199-4