Luo Jun
2007
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Journal
Fine Chemical Intermediates
Abstract
3-Chloro-4-fluoronitrobenzene was prepared from 3,4-dichloronitrobenzene through halogen-exchange fluorination. The reaction rate under microwave heating was 3~12 times higher than that under conventional heating, and the yield and selectivity increased as well. AlCl3 and SbCl3 were applied in this reaction to give excellent results. The best result was obtained in a high yield of 97.0% when 400 W microwaves were used for 10 min.