Table 2. Counteranion Effect on the Catalyst Performance of Catalysts 1 and 2^a.

entry	catalyst	cocatalyst	solvent	conv.b (%)	HAc (%)	HYd (%)
1	1	AgPF6	acetonitrile	70	45	7
2	1	AgPF6e	acetonitrile	71	46	9
3	1	AgNTf2	acetonitrile	65	41	5
4	1	AgOTf	acetonitrile	86	45	6
5	1	AgOTff	acetonitrile	51	31	2
6	1	AgSbF6	acetonitrile	84	56	8
7	1	AgSbF6	neat	>99	58	11
8	1	AgPF6	neat	>99	68	3
9	1	AgOTf	neat	97	68	4
10	2	AgOTf	neat	94	83	3
11	2	AgOTfg	neat	95	87	3
12	2	AgSbF6	neat	95	89	<1
13	2	AgSbF6g	neat	97	89	<1

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

^bAlkyne conversion.

^cYield in hydroamination product.

^dYield in hydration product.

^e4 mol % AgX.

^f1 mol % AgX.

^g3 mol % AgX.