| abstract |
(57) [Summary] [Constitution] 3,4-dichlorobenzotrichloride is reacted with ammonium halide in the presence of a copper catalyst to give 3,4. In the method for producing 4-dichlorobenzonitrile, A method for producing 3,4-dichlorobenzonitrile, which comprises using sulfolane. [Effect] The use of sulfolane has a remarkable effect that 3,4-dichlorobenzonitrile can be obtained in a high yield which cannot be realized by the conventional method. Therefore, the method of the present invention is extremely suitable for industrial production of 3,4-dichlorobenzonitrile. |