Name the following compunds systematically:

Strategy: Use the following designation of positions in the ant-hracene ring system:

Explanation

(i) `9, 10`-Diphenylanthracene
(ii) `1`-Anthrol (or -Hydroxyanthracene)
(iii) Anthraquinone (or `9, 10`-dihydroanthracene-`9,10`-dione)
(iv) `2`-Aminoanthraquinone
Angular fusion (annulation) results in phenanthrene, which can be further annulated to a variety of other benzenoid poly-cycles. Positions in the phenanthrene ring system are designated as shown below: