Multi-step reaction with 7 steps
1.1: N,N,N',N'-tertamethylethylenediamine; s-BuLi / tetrahydrofuran / 0.5 h / -78 °C
1.2: tetrahydrofuran / 0.5 h / 78 °C
1.3: 69 percent / conc. HCl / dioxane / 2 h / Heating
2.1: 95 percent / aq. KOH; pyridine; KMnO4 / 5 h / Heating
3.1: K2CO3 / dimethylformamide / 20 °C
4.1: 4 N HCl / ethyl acetate / 20 °C
4.2: AcOH / dioxane / 6 h / Heating
5.1: 2 N aq. NaOH / tetrahydrofuran; methanol / 2 h / 20 °C
6.1: i-Pr2NEt / various solvent(s) / 8 h / 110 °C
7.1: K2CO3 / dimethylformamide / 0.5 h / 20 °C
With
pyridine; hydrogenchloride; potassium hydroxide; sodium hydroxide; potassium permanganate; N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium; potassium carbonate; N-ethyl-N,N-diisopropylamine;
In
tetrahydrofuran; methanol; ethyl acetate; N,N-dimethyl-formamide;
DOI:10.1021/jm000558h