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Polymerisation of Alkynes

Polymerisatio...

Question

Polymerisation reaction of Propyne in the presence of red hot $F e$ tube results in the formation of:

A

benzene

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B

toluene

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C

mesitylene

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D

cyclononane

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Solution

The correct option is B mesitylene
This process is similar to the process of obtaining benzene by trimerisation of ethyne.Here,just ethyne is substituted by propyne leading to the formation of mesitylene(shown in the figure above).

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