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Tardigrade
Question
Chemistry
An alkane C7H16 is produced by the reaction of lithium dipentyl cuparate with ethyl bromide. The structural formula of the product is:
Q. An alkane
C
7
H
16
is produced by the reaction of lithium dipentyl cuparate with ethyl bromide. The structural formula of the product is:
2038
192
KEAM
KEAM 2000
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A
3-ethyl pentane
B
2-ethyl pentane
C
3-methyl hexane
D
2-methyl hexane
E
n-heptane
Solution:
When lithium dipentyl cuparate reacts with ethyl bromide, it will give n-heptane. This reaction is called Corey-House reaction.
(
C
H
3
C
H
2
C
H
2
C
H
2
C
H
2
)
2
C
uL
i
+
C
H
3
C
H
2
B
r
d
rye
t
h
er
n
−
h
e
pt
an
e
C
H
3
C
H
2
C
H
2
C
H
2
C
H
2
C
H
2
C
H
3
+
C
H
3
C
H
2
C
u
+
L
i
B
r