Multi-step reaction with 11 steps
1.1: 96 percent / imidazole / CH2Cl2 / 1.5 h
2.1: 50 percent / SmI2; HMPA / tetrahydrofuran / 0.25 h / -78 °C
3.1: aq. H2O2; KHCO3; KF / tetrahydrofuran; methanol / 10 h
4.1: CSA / 1 h
5.1: 97 percent / Dess-Martin periodinane / CH2Cl2 / 2 h
6.1: LDA; Eschenmoser's salt / tetrahydrofuran / 1 h / -78 - 0 °C
6.2: 64 percent / acetone / 10 h
7.1: 96 percent / NaBH4 / CeCl3*7H2O / methanol / 0.08 h
8.1: 84 percent / SOCl2; pyridine / diethyl ether / 3 h
9.1: 92 percent / TBAI / tetrahydrofuran; dimethylformamide / 5 h / 60 °C
10.1: 98 percent / PTSA / methanol; H2O / 3 h / 50 °C
11.1: 91 percent / pyridine; DMAP / CH2Cl2 / 0.33 h
With
pyridine; 1H-imidazole; N,N,N,N,N,N-hexamethylphosphoric triamide; dmap; potassium fluoride; sodium tetrahydroborate; thionyl chloride; samarium diiodide; dihydrogen peroxide; eschenmoser's salt; tetra-(n-butyl)ammonium iodide; potassium hydrogencarbonate; Dess-Martin periodane; toluene-4-sulfonic acid; lithium diisopropyl amide;
cerium(III) chloride; camphor-10-sulfonic acid;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; water; N,N-dimethyl-formamide;
3.1: Tamao oxidation / 5.1: Dess-Martin oxidation / 7.1: Luche reduction;
DOI:10.1016/j.tetlet.2004.09.143