Table 1. Solvent Effect on the Performance of Catalyst 1^a.

entry	solvent	alkyne conversion (%)	hydroamination yield (%)	hydration yield (%)
1	acetonitrile	70	45	7
2	toluene	49	24	3
3	ILb	88	62	8
4	DMSO	0	0	0
5	neat	>99	68	3

^aReaction conditions: 1 mmol mesitylamine, 1 mmol phenylacetylene, 0.01 mmol (1 mol %) catalyst 1, 2 mol % AgPF₆, 1 mL solvent, 80 °C, 25 h.

^bIL = 1-butyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide.