Multi-step reaction with 8 steps
1: 90 percent / TiCl4 / CH2Cl2 / Ambient temperature
2: 78 percent / H2, NaOMe / 5percent Pd/C / methanol
3: 90 percent / DBU / CH2Cl2 / 1 h / Ambient temperature
4: 63 percent / n-BuLi, diisopropylamine, O2 / tetrahydrofuran; hexane / 0.5 h / -78 °C
5: 45 percent / NH3 / methanol / 1.) 0 deg C, 2.) room temperature, 3 d
6: 67 percent / HOBt, EDCI / CH2Cl2 / 1.) 0 deg C, 5 min, 2.) room temperature, overnight
7: 91 percent / 2 N H2SO4 / tetrahydrofuran / Ambient temperature
8: 72 percent / Jones reagent / acetone / 1.) 0 deg C, 0.5 h, 2.) room temperature, 1.5 h
With
n-butyllithium; jones reagent; sulfuric acid; ammonia; hydrogen; oxygen; sodium methylate; titanium tetrachloride; benzotriazol-1-ol; 1,8-diazabicyclo[5.4.0]undec-7-ene; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; diisopropylamine;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; hexane; dichloromethane; acetone;
DOI:10.1021/jo00130a015