Multi-step reaction with 26 steps
1: tetrahydrofuran; hexane / Ambient temperature
2: 92 percent / pyridine / CH2Cl2 / 0.5 h / 0 °C
4: MCPBA / CH2Cl2 / 72 h / Ambient temperature
5: 2. potassium fluoride / 1. -78 deg C/THF/5 min 2. MeOH/1 h/room temperature
6: 1. n-BuLi / 1. THF-HMPA, -78 deg C, 10 min 2. 0 deg C, 30 min
8: 92 percent / methyl orthoformate, d,l-camphersulphonic acid / 18 h / 80 °C
9: 5.6 g / CrO3*2Py / CH2Cl2 / 0.5 h / Ambient temperature
10: 94 percent / d,l-camphersulphonic acid / methanol / 12 h / Ambient temperature
11: 1. NaH / 1. 30 min/THF/0 deg C 2. THF/room temperature/12 h
12: 93 percent / MCPBA / CH2Cl2 / 0.5 h / 0 °C
13: 70 percent / NaBH4 / ethanol; tetrahydrofuran / 1 h / 80 °C
14: 95 percent / pyridine / CH2Cl2 / 0.17 h / 0 °C
15: 95 percent / imidazole / dimethylformamide / 30 h / 70 °C
16: 1. ozone 2. NEt3 / 1. -78 deg C/CH2Cl2 2. 20 h/room temperature
17: 1.66 g / pyridinium tosylate / methanol / 48 h / 0 °C
18: 1.67 g / NaOCH3 / methanol / 0.75 h / Ambient temperature
19: 1.45 g / CrO3*2Py / CH2Cl2 / 0.25 h / Ambient temperature
20: 78 percent / tetrahydrofuran; dimethylformamide; pentane / 17 h
21: 1.46 g / acetic acid / tetrahydrofuran; H2O / 48 h / -10 °C
22: 1. NaBH4 2. 12 N KOH / 1. CH3OH, 0 deg C, 15 min 2. EtOH-H2O, reflux, 22 h
23: 1. titanium tetraisopropoxide 2. tert-butyl hydroperoxide / 1. CH2Cl2, -20 deg C, 10 min 2. 1,2-dichlorethane, -20 deg C, 1.5 h
24: 440 mg / SO3*Py, NEt3 / dimethylsulfoxide / 0.25 h / Ambient temperature
25: 1. sodium hydride / 1. THF, 0 deg C, 10min then 2 h at room temperature 2. THF, 2 h
26: 85.2 percent / 1 N KOH / tetrahydrofuran; ethanol / 17 h / Ambient temperature
With
pyridine; 1H-imidazole; titanium(IV) isopropylate; tert.-butylhydroperoxide; potassium fluoride; potassium hydroxide; sodium tetrahydroborate; n-butyllithium; pyridine-SO3 complex; 10-camphorsufonic acid; sodium methylate; pyridinium p-toluenesulfonate; dipyridine chromium trioxide; sodium hydride; ozone; acetic acid; triethylamine; 3-chloro-benzenecarboperoxoic acid; trimethyl orthoformate;
In
tetrahydrofuran; methanol; ethanol; hexane; dichloromethane; water; dimethyl sulfoxide; N,N-dimethyl-formamide; pentane;
DOI:10.1021/jo00193a015