Multi-step reaction with 11 steps
1: 91 percent / L-Selectride / tetrahydrofuran / 1 h / -70 °C
2: 1) lithium diisopropylamide / 1) THF, -70 deg C, 2) up to r.t.
3: 5 M sulphuric acid / 50 °C
4: 68 percent / benzene / 21 h / Heating
5: 48 percent / triethylamine / dimethylformamide / 1.5 h / 0 °C
6: SOCl2, 2,6-lutidine / tetrahydrofuran
7: 2,6-lutidine / dioxane; tetrahydrofuran
8: 78 percent / HCl / tetrahydrofuran / 3 h
9: 66 percent / Jones' reagent / acetone / 3 h / 0 °C
10: Et3N / tetrahydrofuran / 2 h
11: tetrahydrofuran / 3 h
With
2,6-dimethylpyridine; hydrogenchloride; thionyl chloride; jones' reagent; sulfuric acid; L-Selectride; triethylamine; lithium diisopropyl amide;
In
tetrahydrofuran; 1,4-dioxane; N,N-dimethyl-formamide; acetone; benzene;