Problems and exercisesCross-coupling reactions

Which coupling would you choose to attach a phenyl group to C4 of ethyl 4-iodobenzoate: Kumada, Negishi or Suzuki? Justify your answer.

1-Bromo-4-chlorobenzene is treated with one equivalent of phenylboronic acid, Pd(PPh₃)₄ and Na₂CO₃. What product is formed? Explain.