Vanilin is a ring substituted anisole with

If aromatic ring is substituted by more than one group then electrophilic aromatic substitution reaction take place according to more activating group. The group which donates electrons to aromatic ring knwn as activating group and which withdraw electrons from the ring is called electron withdrawing group. generally all lectron releasing groups activates benzene ring towards electrophilic substitution and electron withdrawing groups deactivates ring towards electrophilic substitutions. Q. Major product formation takes place at which position when the following is subjected for E^(o+) substitution

Write structure of anisole.

Explain Ring substitution reactions of aromatic carboxylic acids.

The correct order of decresing reactivity of anisole (I), benzene (II) and nitrobenzene (III) towards aromatic substitution with a given electrophile is

(no ring substitution) product (A) is :