Multi-step reaction with 17 steps
1.1: NaH / tetrahydrofuran / 1 h / 0 °C
1.2: 94.8 percent / tetrahydrofuran / 0.17 h / 0 - 5 °C
2.1: 98.1 percent / TBAF / tetrahydrofuran / 0.5 h / 0 °C
3.1: PPh3; diisopropyl azodicarboxylate; AcOH / tetrahydrofuran / 0.5 h / 0 °C
3.2: 82.2 percent / aq. NaOH / ethanol / 0.17 h / 20 °C
4.1: 78.9 percent / imidazole / dimethylformamide / 3 h / 20 °C
5.1: NaH / tetrahydrofuran / 0.5 h / 0 °C
5.2: TBAB / tetrahydrofuran / 24 h / 50 °C
6.1: 27.94 percent / NaCl / dimethylsulfoxide; H2O / 3 h / 160 °C
7.1: 9.09 g / LiAlH4 / pyridine / 0.5 h / -20 °C
8.1: 74.9 percent / Me3P / tetrahydrofuran / 13 h / 50 °C
9.1: 97.5 percent / HgCl2; Mg / tetrahydrofuran; methanol / 1 h / 18 °C
10.1: H2 / Raney Ni / methanol / 22 h / 20 °C / 2660 Torr
11.1: 5.74 g / iPr2NEt / tetrahydrofuran; H2O / 0 °C
12.1: 10 percent HCl / methanol / 20 h / 20 °C
12.2: 80.7 percent / aq. NaOH / dioxane; H2O / 20 °C / pH 8.5
13.1: 93.7 percent / PPh3; DIAD / tetrahydrofuran / 0.5 h / 0 °C
14.1: 100 percent / aq. NaOH / methanol / 0.5 h / 20 °C
15.1: PPh3; DIAD / tetrahydrofuran / 0.5 h / 0 °C
16.1: aq. NaOH / tetrahydrofuran / 0.33 h / 0 °C
17.1: 2.37 g / iPr2NEt / acetonitrile / 4 °C
With
1H-imidazole; hydrogenchloride; sodium hydroxide; lithium aluminium tetrahydride; di-isopropyl azodicarboxylate; tetrabutyl ammonium fluoride; hydrogen; sodium hydride; magnesium; acetic acid; N-ethyl-N,N-diisopropylamine; triphenylphosphine; sodium chloride; mercury dichloride; trimethylphosphane;
nickel;
In
tetrahydrofuran; pyridine; methanol; water; dimethyl sulfoxide; N,N-dimethyl-formamide; acetonitrile;
1.2: Horner-Emmons reaction / 5.2: Michael addition / 13.1: Mitsunobu reaction / 15.1: Mitsunobu reaction;
DOI:10.1016/S0968-0896(01)00430-8