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Write a reasonable and detailed mechanism for the dehydration of 4-methylcyclohexanol in the presence of sulfuric acid to form 4-methylcyclohexene. Use curved arrows the show the flow of electrons and draw the structures of all intermediates and byproducts formed in the course of the reaction.

Answer :

Answer:

Reaction mechanism follows E1 (unimolecular elimination) pathway

Explanation:

In presence of sulfuric acid, 4-methylcyclohexane undergoes E1 elimination reaction to produce 4-methylcyclohexene.

In the first step, -OH group gets protonated by sulfuric acid.

In the second step, dehydration takes place to produce a carbocation.

In the third step, deprotonation takes place to produce a double bond.

Full reaction mechanism has been shown below.

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