In the production method of the invention, a halogen-substituted aromatic compound is reacted with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride into a corresponding halogen-substituted aromatic aldehyde. By the use of hydrogen fluoride and boron trifluoride, the para position to halogen atom is selectively formylated to provide the halogen-substituted aromatic aldehyde in high yields in a short reaction time even at temperatures lower than room temperature.
在本发明的生产方法中,卤代芳香化合物在
氟化氢和
三氟化硼存在下与
一氧化碳反应生成相应的卤代芳香醛。通过使用
氟化氢和
三氟化硼,卤原子的对位被选择性地甲酰化,即使在低于室温的条件下,也能在很短的反应时间内获得高产率的卤素取代的芳香醛。