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Byju's Answer
Standard XII
Chemistry
Grignard Reagents
Which of the ...
Question
Which of the following reacts fastest with N-bromo succinimide ?
A
C
6
H
6
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B
C
H
4
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C
Pyridine
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D
Toluene
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Solution
The correct option is
D
Toluene
NBS reacts fastest with allylic/benzyl hydrogens, i.e., toluene which contains benzylic hydrogens.
C
6
H
5
C
H
3
N
B
S
,
h
ν
o
r
Δ
−
−−−−−−−
→
C
6
H
5
C
H
2
B
r
+
H
B
r
Toluene Benzyl bromide
Option D is correct.
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Toluene on reaction with N-bromo-succinimide gives:
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