Multi-step reaction with 8 steps
1: 1.) n-butyllithium / 1.) THF, hexane, 0 deg C, 20 min; 2.) -78 deg C -> room temp., 3 h
2: 80 percent / HCl / acetone; H2O / 3 h / Ambient temperature
3: Na2SO4 / benzene / 0 - 10 °C
4: benzene / 10 h / Heating
5: 87 percent / zinc dust / aq. acetic acid
6: 82 percent / NaOH / tetrahydrofuran; H2O
7: 92 percent / pyridine / 16 h / 0 °C
8: 83 percent / n-butyllithium, hexamethylphosphoric triamide / tetrahydrofuran; hexane / 1.) -78 deg C, 0.5 h; 2.) room temp., 5 h
With
pyridine; hydrogenchloride; N,N,N,N,N,N-hexamethylphosphoric triamide; sodium hydroxide; n-butyllithium; sodium sulfate; zinc;
In
tetrahydrofuran; hexane; water; acetic acid; acetone; benzene;
DOI:10.1021/ja00191a038