Q8 · 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 products A and B in the following reaction sequence are: 
A 
B
A B(a)
B = 
B = (b)A = 
B = 
B = (c)A = 
B = 
B = (d)
B = 
B = Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
Hydrazine removes the phthalimide (Ing–Manske) to give the free primary amine A; heating cyclises the amine onto the methyl ester to the γ-lactam (a).
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