Q5 · CSIR-NET Chemistry, June 2014
Paper: CSIR-NET June 2014 · Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Marks: 2 · Difficulty: Medium
The major products formed in the following are: 
(a)
+ 
+ (b)
+ 
+ (c)
+ 
+ (d)
+ 
+ Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Ph₃C⁻Na⁺ is a strong, bulky base that enolises ethyl isobutyrate. Claisen self-condensation follows, giving ethyl 2,2,4-trimethyl-3-oxopentanoate and EtOH (c).
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