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ChemicalBook CAS DataBase List 1,3-Dichloro-2-fluorobenzene

1,3-Dichloro-2-fluorobenzene synthesis

11synthesis methods
-

Yield:2268-05-5 93%

Reaction Conditions:

with chlorine at 180 - 190;Temperature;

Steps:

7 example-7
In a 250 ml four-neck flask, 240 g (1.368 mol)2-fluoro-3-chloronitrobenzene, temperature rise 180 ° C, accessThe dried chlorine gas,Control the temperature of the kettle at 180 ~ 190 ° C,Reaction to the way the reaction distillation 8h ~ 10h, collected distillateLiquid, washing, alkaline washing to weakly alkaline, stratified organic phase vacuum distillation in 2,6 - dichlorofluorobenzene 210g, content 99. 7%, yield 93%

References:

Binhai Yongtai Medical Chemical Co Ltd;He, Renbao;Shao, Hongming CN102249881, 2016, B Location in patent:Paragraph 0015; 0050-0051

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