3.卤化反应( Halogenation) + Fex3 + hX 或Fe 反应活性F2>Cl2>Br27l2Br FeBr t Br t hBr 或Fe 80% Bromobenzene ①D CI Fecl3 Cl2 +hcl 或Fe ⑨D 86% ChlorobenzeneOrganic Chemistry Organic Chemistry Xiamen Xiamen University University 3. 卤化反应(Halogenation) + Br 2 FeB r 3 或 Fe Br + HBr Bromobe n z e n e 80% + X 2 FeX 3 或 Fe X + H X 反应活性 F 2 > C l 2 > B r 2 > I 2 + Cl 2 FeC l 3 或 Fe Cl + HCl Ch l o robe n z e n e 86%