Optimization of reaction conditions^a.

Entry	[TM]	Oxidant	Additives	Yield/%
1	Pd(OAc)2	AgOAc	NaOAc	26
2	Pd(OAc)2	AgOAc	Cs2CO3	Trace
3	Pd(OAc)2	AgOAc	KF	41
4	PdCl2	AgOAc	KF	67b
5	PdCl2	AgOTf	KF	—b
6	PdCl2	Cu(OAc)2	KF	10b
7	Pd(MeCN)2Cl2	AgOAc	KF	72b
8	Pd2(dba)3	AgOAc	KF	36b
9	Pd(PPh3)2Cl2	AgOAc	KF	35b
10	[RuCl2(p-cymene)]2	AgOAc	KF	—b
11	[Cp*RhCl2]2	AgOAc	KF	—b
12	Co(OAc)2·4H2O	AgOAc	KF	—b

^aReaction conditions: 1 (0.20 mmol), 3-Me–C₆H₄I (0.40 mmol), oxidant (0.40 mmol), [TM] (10 mol%), additive (0.40 mmol), DCE (2.0 mL), 130 °C, 12 h, yields of isolated products.

^bOxidant (0.50 mmol), additive (0.50 mmol).