Regarding the Ag source, the reaction proceeded with a yield of 15% when AgBF4 was employed, indicating a low yield (entry 12). Additionally, when AgOAc was used, the reaction proceeded with a moderate yield of 61% (entry 13). Finally, bases such as Na2CO3, Rb2CO3, KOAc, and NaOAc were investigated. The results showed that while each base provided the desired product 22, the yields ranged from low to moderate (entries 14-17). From these results, it was evident that the best conditions for this C-H biarylation were observed in entries 9 and 10.