Question

9,10 position of anthracene reactive towards electrophilic substitution.why?

Answer 1

The reaction is sensitive to oxygen. In most other reactions of anthracene, the central ring is also targeted, as it is the most highly reactive. Electrophilic substitution occurs at the "9" and "10" positions of the center ring, and oxidation of anthracene occurs readily, giving anthraquinone, C14H8O2 (below).