Ulman condensation

It may be prepared by the Ulman Condensation of o-iodobenzoic acid with 2, 6-dichloro-w-toluidine in the presence of copper-bronze resulting into the formation of meclofenamie aeid whieh on neutralization with equimolar proportion of sodium hydroxide yields meclofenamate sodium. 

This dianhydride can also be prepared by the Ulman reaction, i.e. condensation of 4-bromonaphthalic anhydride with copper powder in an inert solvent [82] ... 

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