Question

'R' + CH₃-CO-CH₃ → Schiff's base. What is 'R' in this reaction?

Hint:

A Schiff’s base is formed when a primary amine (\( R-NH_2 \)) reacts with a carbonyl compound to form an imine (-C=NR). The 'R' group represents the amine used in the reaction.

Answer 1

Step 1: Understanding Schiff's Base Formation 
- A Schiff’s base is formed by the reaction between a carbonyl compound (aldehyde or ketone) and a primary amine.
- The reaction involves the nucleophilic attack of the amine (\( R-NH_2 \)) on the carbonyl carbon of the ketone or aldehyde, forming an imine (-C=NR). 
Step 2: Identifying 'R' 
- The given reaction shows a ketone (CHsubscript{3}-CO-CHsubscript{3}, acetone) reacting to form a Schiff’s base.
- The nucleophile that reacts with acetone must be a primary amine.
- The primary amine that leads to the formation of a Schiff's base in this case is methylamine (\( CH_3-NH_2 \)). 
Step 3: Conclusion 
- The value of 'R' in this reaction is methylamine (\( CH_3-NH_2 \)), which reacts with acetone to form the Schiff's base.