Many different substituents can be introduced onto the aromatic ring by electrophilic substitution. To list some possibilities, an aromatic ring can be substituted by a halogen(−Cl, −Br, −I), a nitro group (−NO2), a sulfonic acid group (−SO3H), an alkyl group (−R), or an acyl group (−COR). Starting from only a few simple materials, it is possible to prepare many thousands of substituted aromatic compounds.
đang được dịch, vui lòng đợi..