Question

Among the following compounds, the one which can undergo aldol condensation is:

• A. $(C{H}_3{)}_{2}CHCHO$
• B. $HCHO$
• C. $C_6{H}_{5}CHO$
• D. Both (a) and (b)

Answer 1

The correct option is A $(C{H}_3{)}_{2}CHCHO$

Aldehyde with $\alpha$ hydrogen undergo aldol condensation.
Also, only aldehyde which lacks $\alpha$ hydrogen undergo cannizzaro reaction.
Thus, compound (a) undergoes aldol condensation.
Compound (b) and (c) undergoes cannizzaro reaction.