反应条件
1.1: caesium carbonate / N,N-dimethyl-formamide / 20 °C / Inert atmosphere 2.1: lithium aluminium tetrahydride / tetrahydrofuran / -30 - 20 °C / Inert atmosphere 2.2: 0 °C 3.1: pyridinium chlorochromate / dichloromethane / 1 h / 20 °C View Scheme