ORGANIC CHEMISTRY Chapter 21 e Compounds that have a hydroxyl group directly attached to a benzene ring are called phenols OH CH OH Phenol 4-Methylphenol 苯酚 4-甲基苯酚 OH OH OH 7 1-Naphthol 2-Naphthol 9-Phenanthrol (a-naphthol) (B-naphthol 9-菲酚 1-萘酚 2-萘酚 Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 21 Compounds that have a hydroxyl group directly attached to a benzene ring are called phenols. OH CH3 OH Phenol 4-Methylphenol 苯酚 4-甲基苯酚 OH OH 1-Naphthol (α-naphthol) 2-Naphthol (β-naphthol) 9-Phenanthrol 1 5 4 6 7 8 9 3 2 1 2 3 4 5 6 7 8 OH 10 1-萘酚 2-萘酚 9-菲酚