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Tardigrade
Question
Chemistry
Reaction of which among the following ethers with HI in cold leads to formation of methyl alcohol ?
Q. Reaction of which among the following ethers with
H
I
in cold leads to formation of methyl alcohol ?
1644
230
MHT CET
MHT CET 2015
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A
ethyl methyl ether
B
methyl propyl ether
C
isopropyl methyl ether
D
tert-butyl methyl ether
Solution:
When asymmetrical ether undergoes reaction with HI in cold, bulkier group forms its iodide and smaller group forms its alcohol, whereas if normal alkyl group present in ether, smaller group forms its iodide.
Ethyl methyl ether
C
2
H
5
−
O
−
C
H
3
HI
Ethyl alcohol
C
H
3
I
+
C
2
H
5
O
H
Methyl propyl ether
C
H
3
−
O
−
C
H
2
−
C
H
2
−
C
H
3
HI
Propyl alcohol
C
H
3
I
+
C
H
3
C
H
2
C
H
2
O
H
