Question

4. The following oxidative-addition reactions have been shown to occur. When the second reaction is carried out, the final products are Et Si-SiEt, (äppe)Ir(CO)(Br)H₂, and (dppe)Ir(CO)(SiEt)H₂. Propose a mechanism that accounts

for all products. (Uppe)in(CO)Br HBr (dppe)lr(CO)Br + ESI-H OCI Br EtzSi OC Br H Br

Fig: 1