Unusual Reactions -Alkene KMnO>diol (addition) ■Benzene+KMnO4-→no reaction. -Alkene Br2/CCl4>dibromide (addition) Benzene Br2/CCl4->no reaction. -With FeCla catalyst,Br2 reacts with benzene to form bromobenzene HBr(substitution!) Double bonds remain. Unusual Reactions ▪Alkene + KMnO4 → diol (addition) ▪ Benzene + KMnO4 → no reaction. ▪Alkene + Br2 /CCl4 → dibromide (addition) ▪ Benzene + Br2 /CCl4 → no reaction. ▪With FeCl3 catalyst, Br2 reacts with benzene to form bromobenzene + HBr (substitution!). ▪ Double bonds remain