Table 1.

Screen of Ligands and Pd Sources for the Coupling of Aniline and 4-t-Butylphenyl Methanesulfonate^a

Entry	Ligand	Pd Source	Yieldc
1	1	Pd2(dba)3	0%
2	1	6	98%
3b	1	Pd(OAc)2	99%
4	2	7	4%
5b	2	Pd(OAc)2	2%
6	3	8	0%
7b	4	Pd(OAc)2	0%
8b	5	Pd(OAc)2	0%

^aArOMs (1mmol), amine (1.2 mmol), Pd (1 mol%), ligand (2 mol%), K₂CO₃ (1.4 mmol), t-BuOH (12 mL/mmol), 110 °C, 3 h.

^bUsing water activation protocol (ref. ^9c).

^cGC Yields.