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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:
Write the mechanism of the following reaction :
Give the equation of the following reaction:
Oxidation of propan-1-ol with alkaline KMnO4 solution.
Give the equation of the following reaction:
Dilute HNO3 with phenol.
Name the reagent used in the following reaction:
Benzyl alcohol to benzoic acid.
Write the mechanism (using curved arrow notation) of the following reaction :
Dehydration of 2-butanol yields:
The compound which gives the most stable carbonium ion on dehydration is:
Cyclohexene is best prepared from cyclohexanol by which of the following:
Name the factors responsible for the solubility of alcohols in water.
Suggest a reagent for the following conversion.
In Kolbe’s reaction, instead of phenol, phenoxide ion is treated with carbon dioxide. Why?
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?
Assertion: Bond angle in ethers is slightly less than the tetrahedral angle.
Reason: There is a repulsion between the two bulky (–R) groups.
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.
