Multi-step reaction with 19 steps
1: 99 percent / imidazole / CH2Cl2; dimethylformamide / 0.33 h
2: DIBAL-H / CH2Cl2; hexane / 1 h / 0 °C
3: 12.8 g / SO3*pyridine; Et3N; DMSO / CH2Cl2 / 1.5 h / 0 °C
4: NaH / tetrahydrofuran / 0 °C
5: 269 mg / diisopropylamine; n-BuLi / tetrahydrofuran; hexamethylphosphoric acid triamide; hexane / -78 °C
6: Et3N / DMAP / CH2Cl2 / 1.5 h / 20 °C
7: 3.31 g / DABCO / methanol / 120 h / 100 °C
8: 100 percent / n-Bu4NF / tetrahydrofuran / 3 h / 0 °C
9: 100 percent / SO3*pyridine; DMSO; Et3N / CH2Cl2 / 1.5 h / 0 °C
10: 100 percent / n-BuLi / 1,2-dimethoxy-ethane; hexane / 0 - 20 °C
11: 93 percent / n-BuLi / tetrahydrofuran; hexane / 0.02 h / -88 °C
12: CF3COOH / CH2Cl2 / 20 h / 0 - 23 °C
13: 78.0 mg / diethyl ether / -78 °C
14: ethylenediammonium diacetate / benzene / 2 h / 20 °C
15: TrOOH; n-BuLi / tetrahydrofuran; hexane / -78 °C
16: AcOH; NH4F / tetrahydrofuran; H2O / 1.5 h / 20 °C
17: silica gel
18: 10.7 mg / NH4OH / methanol / 0.5 h / 0 °C
19: 78 percent / SO3*pyridine; DMSO; Et3N / CH2Cl2 / 2 h / 0 °C
With
1,4-diaza-bicyclo[2.2.2]octane; 1H-imidazole; ammonium fluoride; ammonium hydroxide; n-butyllithium; pyridine-SO3 complex; trityl hydroperoxide; tetrabutyl ammonium fluoride; silica gel; sodium hydride; diisobutylaluminium hydride; acetic acid; dimethyl sulfoxide; ethylenediamine diacetic acid; triethylamine; diisopropylamine; trifluoroacetic acid;
dmap;
In
tetrahydrofuran; methanol; N,N,N,N,N,N-hexamethylphosphoric triamide; 1,2-dimethoxyethane; diethyl ether; hexane; dichloromethane; water; N,N-dimethyl-formamide; benzene;
4: Horner-Emmons reaction / 10: Horner-Emmons reaction / 14: Knoevenagel reaction;
DOI:10.1021/jo025641m