Table 1. Recycling of the catalyst for the reaction between 4-bromotoluene and phenylboronicacid^a.

Cycle	Yieldb
1	95
2	92
3	91
4	89

^aReaction condition: 4-bromotoluene (2.5mmol), phenylboronic acid (3.25 mmol), K₂CO₃ (7.5 mmol), H₂O (20 mL), Pd catalyst (10 mg); 50°C

^bIsolated yield.