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Reduction, Oxidation and Hydrolysis in Organic Chemistry
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Dissolving metal reductions (Birch, Na/NH3)
JEE Main level
Single correct option
Difficulty 2 of 3
ro028
The sequence benzene
Na, liq.
NH
X
3
, EtOH
H
X
2
(excess), Pd-C
finally gives
A
cyclohexene
B
cyclohexa-1,3-diene
C
cyclohexane
D
benzene
Answer: C
Birch reduction gives cyclohexa-1,4-diene. Both isolated double bonds then add
H
X
2
over Pd-C, giving cyclohexane.
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