First slide

Derivatives of carbonyl compounds

Question

The major product formed in the following reaction is

Moderate

A
B
C
D

Solution

The dissolving metal reduction of aromatic rings, known as the Birch reduction. Sodium metal is dissolved in liquid NH₃ to give an intense blue solution. Blue is the colour of solvated electron which is strong reducing agent due to their small size and high energy.
$Na + {NH}_{3} \to {Na}^{+} + e^{-} {[{NH}_{3}]}_{n}$

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