Multi-step reaction with 10 steps
1: NaOEt
2: 100 percent / aq. KOH / ethanol / 1 h / Ambient temperature
3: 67 percent / dimethylformamide / 1.5 h / Heating
4: 100 percent / H2, aq. HCl / 10 percent Pd/C / ethanol
5: 100 percent / 6 N HCl / 4 h / Heating
6: CuSO4, pH 9 / dioxane; H2O / 16 h / Ambient temperature
7: pH 12.5 / 20 h / Ambient temperature
8: 62 percent / TBTU, Et3N, pH 8.5 / CH2Cl2 / 2 h / Ambient temperature
9: 20 percent / BuLi / diethyl ether; tetrahydrofuran / -78 °C
10: 100 percent / TFA, thioanisole / 4 h / Ambient temperature
With
hydrogenchloride; potassium hydroxide; n-butyllithium; methyl-phenyl-thioether; hydrogen; sodium ethanolate; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; copper(II) sulfate; triethylamine; trifluoroacetic acid;
palladium on activated charcoal;
In
tetrahydrofuran; 1,4-dioxane; diethyl ether; ethanol; dichloromethane; water; N,N-dimethyl-formamide;
DOI:10.1016/S0960-894X(99)00179-1