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Byju's Answer
Standard XII
Chemistry
Preparation of Alcohols from Grignard Reagents
CH32CHCHO+CH3...
Question
(
C
H
3
)
2
C
H
C
H
O
+
C
H
3
M
g
B
r
e
t
h
e
r
−
−−
→
A
H
3
O
+
−
−−
→
B
The IUPAC name of '
B
' is :
A
2-methylbutan-3-ol
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B
Pentan-2-ol
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C
3-methylbutan-2-ol
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D
2-methylbutan-2-ol
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Solution
The correct option is
D
3-methylbutan-2-ol
(
C
H
3
)
2
C
H
C
H
O
+
C
H
3
M
g
B
r
e
t
h
e
r
,
H
3
O
+
−
−−−−−−
→
(
C
H
3
)
2
C
H
C
H
(
O
H
)
C
H
3
The reaction of aldehyde (RCHO) with Grignard reagent (RMgX) gives a secondary alcohol.
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Similar questions
Q.
3-Methylbutan-2-ol is:
Q.
(+)2- Methylbutan- 1-ol and (-) 2- Methylbutan-1-ol have different values for which property ?
Q.
Arrange the following compounds in the decreasing order of their boiling points
(i) Pentan -1- ol (ii) 2-methylbutan -2- ol (iii) 3- Methylbutan–2- ol.
Q.
Arrange the following compounds in the decreasing order of their boiling points.
a) Pentan-1-ol
b) 2-Methylbutan-2-ol
c) 3-Methylbutan-2-ol
Q.
Arrange the compounds of each set in order of reactivity towards
S
N
2
displacement.
(i) 2-Bromo-2-methylbutane, 1-Bromopentane, 2-Bromopentane
(ii) 1-Bromo-3-methylbutane, 2-Bromo-2-methylbutane, 2-Bromo-3-methylbutane
(iii) 1-Bromobutane, 1-Bromo-2, 2-dimethylpropane, 1-Bromo-2-methylbutane,1-Bromo-3-methylbutane.
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