Multi-step reaction with 9 steps
1.1: 6.32 g / aq. NaOH; H2 / Pd/C / 17 h / 20 °C
2.1: 7.87 g / HCl / 2 h / Heating
3.1: 15.9 g / Et3N / dimethylformamide / 72 h / 20 °C
4.1: 10.1 g / LiOH*H2O / tetrahydrofuran; H2O / 15 h / 20 °C
5.1: Et3N / tetrahydrofuran / 1.17 h / -30 °C
6.1: BuLi / tetrahydrofuran / 0 °C
6.2: 14.1 g / tetrahydrofuran / 15 h / 0 - 20 °C
7.1: TiCl4; Et3N / CH2Cl2 / 0.5 h / -10 °C
7.2: 70 percent / TiCl4 / CH2Cl2 / 3 h / -30 - 0 °C
8.1: BuLi / tetrahydrofuran; hexane / 0.17 h / -10 °C
8.2: 70 percent / tetrahydrofuran; hexane / -78 - -20 °C
9.1: 83 percent / HN3; diisopropyl azodicarboxylate; PPh3 / benzene / 0.83 h / 20 °C
With
hydrogenchloride; lithium hydroxide; sodium hydroxide; n-butyllithium; tris-(2-chloro-ethyl)-amine; di-isopropyl azodicarboxylate; hydrogen; titanium tetrachloride; triethylamine; triphenylphosphine;
palladium on activated charcoal;
In
tetrahydrofuran; hexane; dichloromethane; water; N,N-dimethyl-formamide; benzene;
9.1: Mitsunobu reaction;
DOI:10.1002/hlca.200490280