Table 3. Substrate Scope of the Sonogashira Coupling Reaction Catalyzed by NiFe₂O₄@TiO₂@PDA-Pd under Sunlight Irradiation^a.

^aReaction conditions: aryl halide (1.0 mmol), phenyl acetylene (1.3 mmol), NiFe₂O₄@TiO₂@PDA-Pd catalyst (10 mg), and K₂CO₃ (2 mmol) in EtOH (3 mL) under sunlight at 30 °C.

^bIsolated yields.