5.Synthesize the following compounds with organic starting materials with only one functional group and no more than6 carbo n atoms.and oher reagents (20 points)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)