First slide

Arenes

Question

In which of the following reactions benzene will not formed?

Moderate

A

$C_{6} H_{5} C O O N a \overset{N a O H + C a O}{\to}$
B

$C_{6} H_{5} O H \overset{Z n d u s t}{\to}$
C

$C_{6} H_{5} N_{2}^{+} C l^{-} \underset{Δ}{\overset{H_{3} P O_{2}}{\to}}$
D

$n - h e x a n e \to_{300^{0} C}^{A n h y d r o u s A l C l_{3} \cdot H C l}$

Solution

$1) C_{6} H_{5} C O O N a \overset{N a O H + C a O}{\to} C_{6} H_{6}$
$2) C_{6} H_{5} O H \overset{Z n d u s t}{\to} C_{6} H_{6}$
$3) C_{6} H_{5} N_{2}^{+} C l^{-} \underset{Δ}{\overset{H_{3} P O_{2}}{\to}} C_{6} H_{6}$
4) Isomerization takes place

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