1: oxygen; sodium hydride / N,N-dimethyl-formamide / 0.2 h / 20 °C 2: hydrogenchloride; formaldehyd; water / ethanol / 0.2 h / 80 °C / Microwave irradiation View Scheme

iron(III) chloride in dichloromethane T=20°C; 0.666667 h;