. BONUS QUESTION (1 point): Diazonium salt can be used to synthesize Aryl-Aryl coupling product below: NaOH H3C -NEN H- H3C- + H3C CI нас Which building block below would you use to synthesize the following cross- coupling products using Pd-catalyzed cross-coupling named reactions. Hint 1: Look up what Suzuki, Heck, Negishi, and Stille reactions are. Hint 2: Red bold bond is the disconnecting point. (a) Suzuki Cross-Coupling: (0.25 points) CF3 [Pd] + H3CO (b) Heck Cross-Coupling: (0.25 points) CN [Pd] who HzCÓ CN (c) Stille Cross-Coupling: (0.25 points) Hzco [Pd] 300 F C CH3 (d) Negishi Cross-Coupling: (0.25 points) нсо CH3 [Pd] wo CH3