Palladium-catalyzed arylation of acrylamide with aryl iodides in water;

Palladium——catalyzed arylation of butyl acrylate with aryl iodides in water;

In the presence of 4 MS, using N,N-dimethylformamide (DMF) as solvent, a mixture of termi- nal acetylene, cesium hydroxide and element selenium was stirred under N2 atomsphere at room temperature for 2 h, then diaryliodonium salts were added and the resulting mixture was stirred at 0 ℃ for 30 h to give acetylenic selenides in about 60% yields .