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Chemistry
Which one of the following compounds will react with methyl magnesium iodide ?
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Q. Which one of the following compounds will react with methyl magnesium iodide ?
MHT CET
MHT CET 2008
A
$ CH_{3}CH_{2}CH_{2}CH_{2}CH_{3} $
B
$ CH_{3}CH=CH-CH=CH_{2} $
C
$ CH_{3}-C \equiv C-CH_{2}CH_{3} $
D
$ CH_{3}CH_{2}CH_{2}C \equiv CH $
Solution:
$CH_3 — CH_2— CH_2— C \equiv CH +\underset{\text{methyl magnesium bromide}}{CH_3MgBr}$
$\ce{->} CH_4 + Mg <^{Br}_{C \equiv CCH_2CH_2CH_3}$
due to the presence of acidic hydrogen
(hydrogen attached to triply bonded carbon atom) terminal alkyne (d) will react with
methyl magnesium bromide.