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Question
Chemistry
Arrange the following compounds in decreasing order of coupling with benzenediazonium chloride. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/ae68c2df1022c956c0469ccd595799f4-.png />
Q. Arrange the following compounds in decreasing order of coupling with benzenediazonium chloride.
2449
159
Amines
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A
I
V
>
I
>
II
>
III
37%
B
II
>
I
>
I
V
>
III
41%
C
II
>
I
V
>
I
>
III
12%
D
II
>
III
>
I
V
>
I
10%
Solution:
Coupling reaction between arenediazonium cation and an aromatic compounds which bear powerful electron-releasing groups like -
O
H
,
—
N
H
2
,
—
N
H
R
, or
—
N
R
2
. Hence toluene, having weak electron-releasing
—
C
H
3
group cannot couple with diazonium cation.