Question

Consider the following statement regarding aldol condensation which are correct?

• A. Reaction can be catalysed in acidic or basic medium
• B. A new C-C bond is always formed
• C. $C{H}_{3}CHO$ and $D_{3}CCHO$ reacts at same rate if all other conditions are similar
• D. $C{H}_3-CH=CH-\stackrel{O}{\stackrel{||}{C}}-H$for aldol condensation reaction $\alpha$ hydrogen elimination does not occur

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Reaction can be catalysed in acidic or basic medium
B A new C-C bond is always formed
C $C{H}_{3}CHO$ and $D_{3}CCHO$ reacts at same rate if all other conditions are similar
D

$C{H}_3-CH=CH-\stackrel{O}{\stackrel{||}{C}}-H$

for aldol condensation reaction $\alpha$ hydrogen elimination does not occur

Condition of aldol condensation :

i) The reaction can be catalysed in baric medium.

ii) A new $c-c$ bond is always formed.

iii) $C{H}_{3}CHO$ and $D_{3}CCHO$ reacts at same rate if all other condition are similar.

iv) $C{H}_3-CH=CH-O-H$ , B - hydroxyaldehyde is produced. For aldol condensation reaction of hydrogen elimination does not take place.