Question

Pd(PPh3)4 + PhBe

Answer 1

Here, in this reaction Tetrakis(triphenylphosphine)palladium(0) i.e Pd(PPh3)4 will be responsible for coupling reaction ,

SO here reaction will proceed as

Pd(PPh3)4 + PhBe $\longrightarrow$ Ph-Ph + BeH2, Diphenyl as major product