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प्रश्न
Give the equation of the following reaction:
Dilute HNO3 with phenol.
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उत्तर
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संबंधित प्रश्न
Give reasons for the following:
o-nitrophenol is more acidic than o-methoxyphenol.
Write the mechanism of the following reaction :
Show how will you synthesize pentan-1-ol using a suitable alkyl halide.
Give the equation of the following reaction:
Treating phenol with chloroform in the presence of aqueous NaOH.
When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place:
\[\begin{array}{cc}
\phantom{.......................}\ce{Br}\\
\phantom{......................}|\\
\ce{CH3 - CH - CH - CH3 ->[HBr] CH3 - C - CH2 - CH3}\\
\phantom{.}|\phantom{......}|\phantom{......................}|\phantom{........}\\
\phantom{}\ce{CH3}\phantom{...}\ce{OH}\phantom{...................}\ce{CH3}\phantom{.....}
\end{array}\]
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 ____________.
Dehydration of 2-butanol yields:
The compound which gives the most stable carbonium ion on dehydration is:
Explain why is OH group in phenols more strongly held as compared to OH group in alcohols.
Explain why nucleophilic substitution reactions are not very common in phenols.
Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide. Di-tert-butyl ether can’t be prepared by this method. Explain.
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?
The correct geometry around oxygen in CH3OCH3 is
What happens when (CH3)3 C – OH is heated with Cu/573 K?
Write the chemical equation in support of your answer.
Which of the following alcohols will not undergo oxidation?
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
