5.Synthesize the following compounds with oranic starting materials with onlyne function group and no more tnan o carbon atoms,and other inorganic reagents(20 points). (1) (2 0品 5. Synthesize the following compounds with organic starting materials with only one functional group and no more than 6 carbon atoms, and other inorganic reagents (20 points). O O O CO2H Br Br O SO3H (1) (2) (3) (4) Answer: (1) Cl O AlCl3 O H2SO4 O SO3H (2) H2SO4 SO3H Fe, Br2 SO3H Br Br H+ Br Br KMnO4 CO2H Br Br (3) (4) O O O O O OEt O O BnBr OEt O O Ph n-PrBr OEt O O Ph 1) NaOH 2) H+ 3) Δ O O O O Br O O MeI OH￾H2O EtONa EtONa EtONa EtONa