Question

Identify ortho and para-directing groups from the following:

\[\ce{\underset{I}{–CHO},\underset{II}{–NHCOCH3},\underset{III}{–OCH3},\underset{IV}{–SO3H}}\]

Options

• III, IV

• II, III

• II, IV

• I, IV

Answer 1

II, III

Explanation:

Electron-donating groups such as –OCH₃, –NHCOCH₃ are ortho and para-directing groups.