7-methoxyquinoline and its derivatives are widely used in medicine. For example, 4-chloro-7-methoxyquinoline is an important intermediate of anticancer drugs and has a wide range of applications in synthetic medicine, dyes, pesticides and chemical additives. The prepared products have good efficacy in anti-malaria, bactericidal, anti-inflammatory, anti-tumor and so on. Some 4-chloro-7-methoxyquinoline derivatives have been developed into marketed drugs or used in clinical studies
