An unknown aldehyde 'A' on reacting with alkali gives a b - hydro… - Vidyadip

Question

An unknown aldehyde 'A' on reacting with alkali gives a b - hydroxy - aldehyde, which loses water to form an unsaturated aldehyde, 2 - butenal. Another aldehyde 'B' undergoes disporportionation reaction in the presence of conc. alkali to form products C and D. C is - an aryl alcohol with formula $C _7 H _8 O$.
1. Identify A and B .
2. Write the sequence of reactions involved
3. Name the product, when 'B' reacts with Zn amalgam and hydrochloric acid.

✓

Answer

1. ‘A’ is acetaldehyde ‘B’ is Benzaldehyde
2. reactuib are shown above.

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