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प्रश्न
What happens when (CH3)3 C – OH is heated with Cu/573 K?
Write the chemical equation in support of your answer.
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उत्तर
When a tertiary alcohol is heated with Copper at 573 K, due to absence of α-hydrogen atom dehydration reaction takes place and produce 2-methyl propene.
\[\begin{array}{cc}
\phantom{....}\ce{CH3}\phantom{.................}\ce{CH3}\phantom{.}\\
\phantom{.}|\phantom{.....................}|\phantom{.}\\
\phantom{}\ce{CH3 - C - OH ->[Cu][573K] \underset{2-metyl propene}{CH3 - C = CH2}}\\
|\phantom{......................}\\
\ce{\underset{Tertiary Butanol}{CH3}}\phantom{...................}
\end{array}\]
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संबंधित प्रश्न
Write the mechanism of the following reaction:
Write the mechanism of the following reaction :
When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place:
\[\begin{array}{cc}
\phantom{...................................}\ce{Br}\\
\phantom{..................................}|\\
\ce{CH3 - CH - CH - CH3 ->[HBr] CH3 - C - CH2 - CH3}\\
|\phantom{.........}|\phantom{...................................}|\phantom{...........}\\
\ce{CH3}\phantom{...}\ce{OH}\phantom{...............................}\ce{CH3}\phantom{.......}\\
\end{array}\]
Give a mechanism for this reaction.
(Hint: The secondary carbocation formed in step II rearranges to a more
stable tertiary carbocation by a hydride ion shift from 3rd carbon atom.)
Write the mechanism (using curved arrow notation) of the following reaction :
Lucas reagent is ____________.
Which of the following is not true in case of reaction with heated copper at 300°C?
Identify the secondary alcohols from the following set:
- \[\ce{CH3CH2CH(OH)CH3}\]
- \[\ce{(C2H5)3COH}\]
Why is the C – O – H bond angle in alcohols slightly less than the tetrahedral angle whereas the C – O – C bond angle in ether is slightly greater?
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene
