Ma Yu-long
2002
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Journal
Wuhan University Journal
Abstract
Synthesis of 3,4-dichlorobenzoic acid from 3,4-dichlorotoluene by air oxidation with Co-Br salts and self-made cocatalyst in the condition of nonsolvent was studied. The results show that the suitable condition is: weight ratio of the material to the main catalyst, 1000:3; temperature, 165℃; pressure, 1.35 MPa; reaction time, 10 h; conversion, 51.2%; yield,87. 4%.