ChemicalBook CAS DataBase List 3,4-Dichlorobenzotrifluoride

3,4-Dichlorobenzotrifluoride synthesis

10synthesis methods

Product Name:3,4-Dichlorobenzotrifluoride
CAS Number:328-84-7
Molecular formula:C7H3Cl2F3
Molecular Weight:215

98-56-6 Synthesis

98-56-6
390 suppliers
$11.00/25g

328-84-7
369 suppliers
$5.00/5g

56148-83-5
11 suppliers
inquiry

50594-82-6
235 suppliers
$6.00/5g

Yield:328-84-7 82.46% ，50594-82-6 5.25% ，56148-83-5 12.29%

Reaction Conditions:

with sulfuric acid;chlorine;aluminum (III) chloride;iron at 110;Product distribution / selectivity;

Steps:

1
Into a 1000 ml 4-neck flask add p-chloro trifluoromethyl benzene 1000 g, metal powdered iron 6 g, and anhydrous aluminum chloride 10 g, start agitation, heat the mixed solution to 100° C., then slowly feed concentrated sulfuric acid-dried chlorine 1028 g under reaction temperature 110° C., take sample, make GC analysis and trace to judge the reaction end point, lower the temperature, discharge the products, and obtain mixed solution of chlorides. The mixed solution contains 82.46% the 3,4-dichlorotrifluoromethyl benzene, 5.25% the 3,4,5-trichloro trifluoromethyl benzene and 12.29% 2,4,5-trichloro trifluoromethyl benzene and polychlorides.

References:

Zhejiang Weihua Chemical Co., Ltd. US2009/240083, 2009, A1 Location in patent:Page/Page column 3

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