Multi-step reaction with 13 steps
1: 960 g / p-TsOH / CH2Cl2 / 0.5 h
2: 61 percent / 1.) lithium dicyclohexylamide / 1.) THF, -78 deg C, 1 h; 2.) HMPA, 45 min
3: 1.) NaH / 1.) THF, DMF, HMPA, 30 min; 2.) THF, room temp., 3 h
4: 52 mg / Raney Ni / ethanol / 1 h / Heating
5: 45 mg / LiAlH4 / tetrahydrofuran / 0.5 h
6: 32 mg / pyridine / 1 h / Ambient temperature
7: 18 mg / Bu4NF (1M) / tetrahydrofuran / 7 h / Ambient temperature
8: 3.10 g / pyridine-SO3, Et3N / dimethylsulfoxide / 1 h / Ambient temperature
9: 3.61 g / diethyl ether / 3 h / Ambient temperature
10: 2.12 g / NaBH4, CeCl3*7H2O / methanol / 0.5 h
11: 2.30 g / p-TsOH / CH2Cl2 / 0.5 h
12: 1.81 percent / K2CO3 / methanol / 1 h / 40 - 45 °C
13: 260 mg
With
sodium tetrahydroborate; lithium aluminium tetrahydride; cerium(III) chloride; tetrabutyl ammonium fluoride; sulfur trioxide pyridine complex; sodium hydride; lithium dicyclohexylamide; potassium carbonate; toluene-4-sulfonic acid; triethylamine;
nickel;
In
tetrahydrofuran; pyridine; methanol; diethyl ether; ethanol; dichloromethane; dimethyl sulfoxide;
DOI:10.1248/cpb.35.4000