Question

Acidic dehydration of 1- butanol
- butane as the major product and not
1-butene. Why? Explain with equations​

Answer 1

ANSWER:-

Dehydration reaction of an alcohol can be represented as:

Dehydration reaction of an alcohol can be represented as:CH−C−OH^H+ −C=C−

−C=C−Primary alcohol undergo dehydration via E2 mechanism and secondary and tertiary alcohol undergo dehydration by E1 mechanism via most stable carbocation formation through rearrangement.

−C=C−Primary alcohol undergo dehydration via E2 mechanism and secondary and tertiary alcohol undergo dehydration by E1 mechanism via most stable carbocation formation through rearrangement.For 2-methylcyclohexanol the dehydration product is 1-methylcyclohex-1-ene or 1-methylcyclohexene

−C=C−Primary alcohol undergo dehydration via E2 mechanism and secondary and tertiary alcohol undergo dehydration by E1 mechanism via most stable carbocation formation through rearrangement.For 2-methylcyclohexanol the dehydration product is 1-methylcyclohex-1-ene or 1-methylcyclohexene and For Butan-1-ol the dehydration product is But-1-ene.

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