Table 1. Influence of the ligand on the product distribution ^a .

Entry	L	4a b (%)	15 b (%)	14a b (%)	14b b (%)
1	tBu3P	4	<1	59	21
2	PCy3	58	30	8	—
3	PPh3	40	40	11	—
4	L2	63	33	<1	—
5	L3	12	40	28	8

^aReaction conditions: 0.05 mmol 3a, 2.5 mol% Pd(dba)₂, 5.0 mol% L, 20 mol% AdCO₂H, 1.5 equiv. Cs₂CO₃ 0.25 M in toluene, 110 °C, 12 h.

^bDetermined by ¹H-NMR with an internal standard.