反应条件
1.1: toluene-4-sulfonic acid / dichloromethane / 20 °C 2.1: n-butyllithium / tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide; hexane / 0.5 h / -60 °C 2.2: -20 - 20 °C 3.1: Jone's reagent / acetone / 0 - 4 °C 4.1: sulfuric acid / 20 °C 5.1: hydrogen; ethylenediamine / ethanol; water View Scheme