I found a route of synthesis for diclofenac and I am trying to make a reaction mechanism of this route. I have almost finished it but have a little trouble with the first and second step of sythesis route.
You can see in the attach file that the first reaction combines the 2-chlorobenzoic acid with the 2,6-dichloroaniline using copper, as a catalyst, in a basic environment forming 2-((2,6-dichlorophenyl)amino)benzoic acid. This reaction seem pretty familiar to me but I have forgotten the name for this type of reaction. If you would know the name I will have a starting point to finish the mechanism for this step.
Also in the attach file you can see that the second reaction removes the carboxylic acid from the molecuul by only using heat. The cooled melt is dissolved using benzene and the benzene solution is extracted using sodium carbonate and Water. The Solution is dried with sodium sulfate. I have not made much progress with this step and I would like to know what the reaction mechanism looks like.
you can find the link to the article where i found the route of synthesis for diclofenac here: https://patentimages.../US3558690.pdf