The carbonylation reaction of nitrobenzene to methyl phenylcarbamate: Highly efficient promoters for the palladium-phenanthroline catalytic system based on phosphorus acids

Phenomenal! The activity of the palladium-phenanthroline catalytic system for the carbonylation of nitrobenzene to methyl phenylcarbamate is greatly enhanced by the addition of phosphorus acids. Of those that were studied, the best promoter is the very cheap, easily separable, and nontoxic phosphoric acid