TABLE 3.

Screening of the solvent in the reaction of hydroamination promoted by 2b.

Entry a	Solvent	Yield (%) b
1	CH3CN	70
2	1,4-Dioxane	20
3	Dimethylsulfoxide	13
4	C2H2Cl4	45
5	Toluene	50
6	Ethylene Carbonate	35

^a Reaction conditions: 1.0 mmol aniline, 1.5 mmol phenylacetylene, 1% mol 2b, 2% mol Ag salt, 90°C oil-bath, 16h, solvent (1 mL).

^b Yields are averaged from two runs and determined by ¹H-NMR, analysis through internal standard.