4-chloro-2-fluoronitrobenzene is a vital farming intermediate approximately, such as synthetic low toxicity, broad spectrum, ultra-high efficiency weedicide fluthiacetmethyl. The existing synthetic method has a great majority of 2, and 4-dichloronitrobenzene is a starting raw material, so prepare 4-chloro-2-fluoronitrobenzene through the halogen replacement(metathesis)reaction.
