Multi-step reaction with 13 steps
1: pyridine / 20 h / 25 °C
2: 1) n-BuLi / 1) THF, hexane, -78 deg C, 30 min, 2) toluene, THF, -78 deg C, 30 min
3: 1) NaH / 1) 1,2-dimethoxyethane, toluene, 25 deg C, 30 min, 2) 25 deg C, 2 h
4: 47 percent / NaBH4, CeCl3*7H2O / methanol; tetrahydrofuran / 0.17 h / 25 °C
5: K2CO3, MeOH
6: 85 percent / imidazole / dimethylformamide / 4.5 h / 25 °C
7: DIBAL / toluene / -78 °C
10: 91 percent / imidazole / dimethylformamide / 4.5 h / 25 °C
11: 1) NaI, chloramine-T hydrate, 2) Zn / 1) glacial acetic acid, 25 deg C, 2 min, 2) glacial acetic acid, 25 deg C, 2.5 h
13: 93 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 14 h / 25 °C
With
pyridine; 1H-imidazole; methanol; sodium tetrahydroborate; n-butyllithium; cerium(III) chloride; tetrabutyl ammonium fluoride; chloroamine-T; sodium hydride; diisobutylaluminium hydride; potassium carbonate; sodium iodide; zinc;
In
tetrahydrofuran; methanol; N,N-dimethyl-formamide; toluene;
DOI:10.1021/jm00121a046