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Byju's Answer
Standard XII
Chemistry
SN1 Reaction Mechanism
How can you c...
Question
How can you change bromoethane to propanal?
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Solution
C
H
3
−
C
H
2
−
B
r
K
C
N
−
−−
→
C
H
3
−
C
H
2
−
C
N
↓
H
2
O
D
i
B
A
L
−
H
C
H
3
−
C
H
2
−
C
H
O
P
r
o
p
o
n
a
l
In first step Nucleophilic substitution of
−
C
N
group take place as
B
r
⊝
is a good leaving group. Then on an addition of
H
2
O
in presence of
D
i
B
A
L
−
H
, partial hydrolysis takes place and we get aldehyde.
D
i
B
A
L
−
H
is a reducing agent.
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