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Byju's Answer
Standard XII
Chemistry
Grignard Reagent for Alkenes
The treatment...
Question
The treatment of
C
H
3
M
g
X
with
C
H
3
−
C
≡
C
−
H
produces:
A
C
H
3
−
C
≡
C
−
C
H
3
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B
C
H
3
−
C
H
3
|
C
=
C
H
2
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C
C
H
2
=
C
=
C
H
2
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D
C
H
4
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Solution
The correct option is
D
C
H
4
Grignard reagent abstracts the acidic proton as it acts as a base when an acidic hydrogen is present. The terminal alkyne hydrogen is mildly acidic.
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Similar questions
Q.
The treatment of
C
H
3
M
g
X
with
C
H
3
−
C
≡
C
−
H
produces:
Q.
The treatment of
C
H
3
M
g
X
with
C
H
3
C
≡
C
−
H
produces:
Q.
The treatment of
C
H
3
M
g
X
with
C
H
3
−
C
≡
C
−
H
produces:
Q.
Given compound (A) upon treatment with
K
M
n
O
4
/
H
+
gives (B), which on heating with ammonia produces (C). (C) on treatment with
B
r
2
/
N
a
O
H
produces (D). Strongly heating (C) produces (E) which on further reatment with ethyl 2-bromoacetate in the presence of
K
O
H
followed by acidification gives (F).
(D) is:
Q.
The treatment of
H
3
C
−
C
H
=
C
H
−
C
H
3
with
N
a
I
O
4
(or) boiling
K
M
n
O
4
produces :
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Grignard Reagent for Alkenes
Standard XII Chemistry
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