Q. Which one of the following compounds will react with methyl magnesium iodide?
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) $CH_{3}CH_{2}CH_{2}C \equiv CH$
Explanation
(d)
$CH_{3} - CH_{2} - CH_{2} - C \equiv CH + CH_{3}MgBr$
Methyl magnesium
bromide
[image:13_image295.emf]
Due to the presence of acidic hydrogen (hydrogen attached to triply bonded carbon atom) terminal alkyne ($d$) will react with methyl magnesium bromide.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.