Multi-step reaction with 9 steps
1: 1.) LDA, 2.) TMEDA / 1.) THF, from -45 to -20 deg C, 1.5 h, 2.) THF, from -45 to -20 deg C, 3 h
2: aq. NaOH / methanol
3: BOP, i-Pr2NEt / dimethylformamide
4: 67 percent / NaH / dimethylformamide / 0 °C
5: 100 percent / HCl / dioxane
6: 1.) DBU / 1.) DMF, 2.) DMF
7: 85 percent / H2 / Pd(OH)2/C / methanol
8: 78 percent / H5IO6, aq. RuCl3 / acetonitrile; CCl4
9: 26 percent / BOP, i-Pr2NEt / dimethylformamide
With
hydrogenchloride; ruthenium trichloride; sodium hydroxide; N,N,N,N,-tetramethylethylenediamine; hydrogen; sodium hydride; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; 1,8-diazabicyclo[5.4.0]undec-7-ene; periodic acid; N-ethyl-N,N-diisopropylamine; lithium diisopropyl amide;
palladium dihydroxide;
In
1,4-dioxane; methanol; tetrachloromethane; N,N-dimethyl-formamide; acetonitrile;
DOI:10.1016/S0960-894X(99)00215-2