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Byju's Answer
Standard XII
Chemistry
Reduction to Amines
[CH3CH2CH2- ...
Question
⎡
⎢ ⎢
⎣
C
H
3
C
H
2
C
H
2
−
C
H
3
+
|
N
|
−
C
H
3
C
H
2
C
H
3
⎤
⎥ ⎥
⎦
O
H
−
H
e
a
t
−
−−
→
Consider the reaction Which of the following is formed in major amount?
A
C
H
2
=
C
H
2
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B
C
H
3
C
H
2
=
C
H
2
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C
Both (1) and (2) in equal amount
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D
None, as no reaction takes place
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Solution
The correct option is
A
C
H
2
=
C
H
2
⎡
⎢ ⎢
⎣
C
H
3
C
H
2
C
H
2
−
C
H
3
+
|
N
|
−
C
H
3
C
H
2
C
H
3
⎤
⎥ ⎥
⎦
O
H
−
H
e
a
t
−
−−
→
C
H
3
C
H
2
C
H
2
−
C
H
3
|
N
|
H
C
H
3
+
C
H
2
=
C
H
2
The given reaction is Hofmann elimination process where a quaternary amine is heated to create a tertiary amine and an alkene.
With the given quaternary ammonium hydroxyl anion, the major alkene product is the least substituted. Thus the major alkene formed is ethene.
Suggest Corrections
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Similar questions
Q.
Consider the reaction
⎡
⎢ ⎢
⎣
C
H
3
C
H
2
C
H
2
−
C
H
3
+
|
N
|
−
C
H
3
C
H
2
C
H
3
⎤
⎥ ⎥
⎦
O
H
−
H
e
a
t
−
−−
→
Which of the following is formed in major amount?
Q.
The type of isomerism shown by the following set of compounds is:
C
H
3
C
H
2
C
H
2
C
H
2
C
H
3
,
C
H
3
−
C
H
3
|
C
H
−
C
H
2
C
H
3
,
C
H
3
−
C
H
3
|
C
|
C
H
3
−
C
H
3
Q.
The order of reactivity of following alcohols with halogen acids is:
(A)
C
H
3
C
H
2
−
C
H
2
−
O
H
(B)
C
H
3
−
C
H
2
−
C
|
C
H
3
H
−
O
H
(C)
C
H
3
−
C
H
2
−
C
H
3
|
C
|
C
H
3
−
O
H
Q.
C
H
3
−
C
H
2
−
B
r
+
N
a
O
H
K
1
→
C
H
3
−
C
H
2
−
O
H
+
N
a
B
r
→
reaction
(
1
)
C
H
3
−
C
H
3
|
C
|
C
H
3
−
C
H
2
−
B
r
+
N
a
O
H
K
2
→
(
C
H
3
)
3
C
−
C
H
2
−
O
H
+
N
a
B
r
→
reaction
(
2
)
K
1
and
K
2
are the rate constant for the given reactions. The correct relation is:
Q.
Identify the type of the following reaction of carbon compounds.
a. CH
3
-CH
2
-CH
2
-OH → CH
3
-CH
2
-COOH
b. CH
3
-CH
2
-CH
3
→ 3CO
2
+ 4H
2
O
c. CH
3
-CH = CH -CH
3
+ Br
2
→ CH
3
-CHBr - CHBr -CH
3
d. CH
3
-CH
3
+ Cl
2
→ CH
3
-CH
2
-Cl + HCl
e. CH
3
-CH
2
-CH
2
-CH
2
-OH → CH
3
-CH
2
-CH=CH
2
+ H
2
O
f. CH
3
-CH
2
-COOH + NaOH → CH
3
-CH
2
-COO - Na
+
+ H
2
O
g. CH
3
-COOH + CH
3
-OH → CH
3
-COO- CH
3
+ H
2
O
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