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C–H arylation results. Conditions A: Conducted at rt for 20 h in 2 wt % Brij 35/water (1 mL) with 10 mol % Pd(OAc)2, AgOAc (2 equiv), HBF4 (5 equiv), arylurea (1, 0.25 mmol), and ArI (2.0 equiv). Conditions B: Conducted at rt for 20 h in EtOAc (1 mL) with 10 mol % [Pd(MeCN)4](BF4)2, BQ (2 or 5 equiv), arylurea (1, 0.25 mmol), and ArB(OH)2 (1.5 or 3 equiv). aRun for 48 h. b2 equiv of BQ. cRun for 96 h. dRun for 72 h.
