反应条件
1.1: N,N-dimethyl-formamide / 3 h / 20 - 100 °C 2.1: N-ethyl-N,N-diisopropylamine / acetonitrile / 4.05 h / 20 °C 3.1: oxalyl dichloride / dichloromethane; N,N-dimethyl-formamide / 3.08 h / 0 °C / Cooling with ice 3.2: 0.08 h / 0 °C 4.1: potassium carbonate; methylamine / isopropyl alcohol; water / 15 h / 60 °C View Scheme