Question

Which is the decreasing priority order of the given functional group?

• A. amide>aldehyde>ketone>amine>alkyne
• B. aldehyde>amide>ketone>amine>alkyne
• C. aldehyde>amide>amine>alkyne>ketone
• D. alkyne>aldehyde>amide>amine>ketone

Hint:

In functional group priority ordering, the reactivity and electronic effects of the functional groups determine their ranking. Carbonyl-containing groups typically take higher priority.

Answer 1

The Correct Option is A

The decreasing priority order of functional groups is based on their reactivity and the electronic effects of each group. The higher the priority, the more reactive and higher the ranking the functional group has in naming conventions and reactions.

Amide: This is the highest priority due to the presence of a carbonyl group and nitrogen, which strongly influence the reactivity.

Aldehyde: The carbonyl group makes aldehydes reactive, and they rank higher than ketones, amines, and alkynes.

Ketone: Ketones also have a carbonyl group but have lower reactivity than aldehydes because of the electron-donating effects of the alkyl groups attached.

Amine: Amines contain nitrogen, which can donate electrons, making them reactive, but they are ranked lower than carbonyl-containing groups.

Alkyne: Alkynes have a lower priority due to their weak reactivity compared to carbonyl and nitrogen-based functional groups.

Thus, the correct priority order is amide>aldehyde>ketone>amine>alkyne.