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The Sonogashira reaction of iodobenzene with phenylacetylene was carried out in water using Pd/C as catalyst and surfactants as additives. The effect of various cationic and anionic surfactants on the activity of Pd/C for the above reaction was studied. The reaction was found to be promoted by cationic surfactants only. The effect of surfactant concentration, different types of bases and temperature...