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प्रश्न
Name the reagent used in the following reaction:
Oxidation of a primary alcohol to aldehyde.
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उत्तर
Pyridinium chlorochromate (PCC), C5H5NH+Cr CrO3Cl− (in CH2Cl2) or pyridinium dichromate (PDC), \[\ce{(C5H5N+H)2Cr2O^-_7}\] (in CH2Cl2) is used in the oxidation of a primary alcohol to aldehyde.
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संबंधित प्रश्न
Write the final product(s) in each of the following reactions:
Show how will you synthesize pentan-1-ol using a suitable alkyl halide.
Name the reagent used in the following reaction:
Oxidation of a primary alcohol to carboxylic acid.
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.)
Lucas reagent is ____________.
By which of the following methods alcohol can be prepared in excellent yield?
Dehydration of 2-butanol yields:
Primary and secondary alcohols on the action of reduced copper give:
The compound which gives the most stable carbonium ion on dehydration is:
The process of converting alkyl halides into alcohols involves ______.
Mark the correct increasing order of reactivity of the following compounds with HBr/HCl.
| (a) |  |
| (b) |  |
| (c) |  |
Name the factors responsible for the solubility of alcohols in water.
Suggest a reagent for the following conversion.
Explain why is OH group in phenols more strongly held as compared to OH group in alcohols.
Which of the following alcohols will not undergo oxidation?
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene
