Multi-step reaction with 9 steps
1: 85 percent / K2CO3, Pd(PPh3)4 / dimethylformamide / 15 h / 110 °C
2: H2 / Pd/C / 2068.59 Torr
3: 1.) aq. HCl, AcOH, NaNO2, 2.) KI, aq. HCl / 1.) 0 deg C, 25 min, 2.) from 0 to 60 deg C
4: 50 percent / Pd(PPh3)4 / tetrahydrofuran / 12 h / Heating
5: 100 percent / aq. LiOH / tetrahydrofuran; methanol / 2 h / Heating
6: 72 percent / EDCI, HOBT
7: CoCl2*6H2O, NaBH4 / tetrahydrofuran; methanol / 3 h / Ambient temperature
8: titanium isopropoxide / tetrahydrofuran / 1 h / Ambient temperature
9: NaCNBH3 / methanol; tetrahydrofuran / 4 h / Ambient temperature
With
titanium(IV) isopropylate; hydrogenchloride; lithium hydroxide; sodium tetrahydroborate; tetrakis(triphenylphosphine) palladium(0); hydrogen; sodium cyanoborohydride; potassium carbonate; benzotriazol-1-ol; acetic acid; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; potassium iodide; cobalt(II) chloride; sodium nitrite;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; N,N-dimethyl-formamide;
DOI:10.1021/jm9900873