反应条件
1.1: caesium carbonate; N-benzyl-N,N,N-triethylammonium chloride / 60 - 65 °C 2.1: water; lithium hydroxide hydrate / 12 h / 70 °C 2.2: 20 °C / pH 2 3.1: sulfuric acid / ethyl acetate / 4 h / Reflux 4.1: ethyl acetate / 20 °C / Reflux 5.1: hydrogenchloride / dichloromethane; water / 1 h 5.2: 2 h / 20 - 25 °C View Scheme
