Multi-step reaction with 19 steps
1: 19.5 g / AlCl3 / CH2Cl2 / 16 h / Ambient temperature
2: 12.4 g / H2 / 10percent Pd/C / ethanol / 3040 Torr
3: 10.9 g / aq. KOH / ethanol / 3 h / Ambient temperature
4: 7.6 g / PPA / 0.33 h / 100 °C
5: LiCN / tetrahydrofuran / 0.75 h / 5 °C
6: p-TsOH / benzene / 2 h / Heating
7: NaBH4 / ethanol / 1 h / Heating
8: 45percent aq. KOH / ethane-1,2-diol / 20 h / Heating
9: oxalyl chloride, DMF / toluene / 1.5 h / 50 °C
10: 1.) EtMe2N / 1.) toluene, RT, 3 h, 2.) toluene, from -70 to -30 deg C, 2 h
11: LiAlH4 / tetrahydrofuran / 1 h
12: NEt3 / CH2Cl2 / 1 h / 0 °C
13: 48 h / 25 °C
14: 1-<3-(dimethylamino)propyl>-3-ethylcarbodiimide hydrochloride, 1-hydroxybenzotriazole / tetrahydrofuran / 18 h / Ambient temperature
15: 0.31 g / DDQ / dioxane / 4 h / Heating
16: BH3*THF / tetrahydrofuran / 3 h / Heating
17: 2.00 g / aq. LiOH / tetrahydrofuran
18: 1-<3-(dimethylamino)propyl>-3-ethylcarbodiimide hydrochloride, 1-hydroxybenzotriazole / tetrahydrofuran / 18 h / Ambient temperature
19: BH3*THF / tetrahydrofuran / 5 h / Heating
With
potassium hydroxide; lithium hydroxide; sodium tetrahydroborate; lithium aluminium tetrahydride; aluminium trichloride; borane-THF; oxalyl dichloride; N,N-dimethyl-ethanamine; lithium cyanide; hydrogen; benzotriazol-1-ol; toluene-4-sulfonic acid; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; N,N-dimethyl-formamide; 2,3-dicyano-5,6-dichloro-p-benzoquinone;
palladium on activated charcoal;
In
tetrahydrofuran; 1,4-dioxane; ethanol; dichloromethane; ethylene glycol; toluene; benzene;
DOI:10.1021/jm960723m