Multi-step reaction with 8 steps
1: 1) Zn, CeCl3*7H2O, 2) p-TsOH / 1) MeOH, 3h, reflux, 2) acetone, 1.5h, RT
2: 1) Mg / 1) ether, 15 min, 2) ether, 4h, RT
3: 1) oxalyl chloride, DMSO, 2) NEt3 / 1) CH2Cl2, -65 deg C, 15 min, 2) -65 deg C, 5 min
4: 16 percent / NaBH3CN, ZnBr2 / tetrahydrofuran; propan-1-ol; H2O / 72 h / Heating
5: 1) Hg(OTFA)2, 2) O2, NaBH4 / 1) THF, 1.75h, 2) DMF, RT, 1h
6: 54 percent / m-chloroperbenzoic acid / CH2Cl2 / 1) 0 deg C, 15 min, 2) RT, overnight
7: 98 percent / HCl / CH2Cl2 / 0.08 h / 0 °C
8: 98 percent / H2, methanolic HCl / 10percent Pd-C / ethanol / 1.5 h / Ambient temperature
With
hydrogenchloride; sodium tetrahydroborate; cerium(III) chloride; oxalyl dichloride; hydrogen; oxygen; mercury(II) trifluoroacetate; sodium cyanoborohydride; toluene-4-sulfonic acid; magnesium; dimethyl sulfoxide; triethylamine; 3-chloro-benzenecarboperoxoic acid; zinc dibromide; zinc;
palladium on activated charcoal;
In
tetrahydrofuran; propan-1-ol; ethanol; dichloromethane; water;
DOI:10.1016/S0040-4020(01)81779-8