Chemistry · Alcohols, Phenols and Ether
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Which of the most suitable reagent for the conversion of R-CH2OH -->RCHO?
- A
KMnO4/NaOH
- B
Pyridinium chlorochromate
- C
CrO3
- D
Cr2O4/H2SO4 (Conc.)
RCH2OH→RCHO
its an oxidation reaction.
Pyridinium chlorochromate is amild oxidising agent that oxidises primary alcohol to aldehydes and secondary alcohols to ketones. It does not effect any other functional group and therefore have high selectivity for oxidation of alcohols. Whereas acidic permanganate, acidic dichromate, chromic anhydride in glacial acetic acid are strong oxidising agents and can do further oxidation to carboxylic acid.
The most suitable reagent for RCH2OH→RCHO is pyridinium chlorochromate (PCC)
KMnO4/NaOH is also a strong oxidizing agent, known as alkaline potassium permanganate, but it is generally for suitable for oxidizing primary alcohols to carboxylic acids rather than aldehydes.
RCH2OH→RCHO
its an oxidation reaction.
Pyridinium chlorochromate is amild oxidising agent that oxidises primary alcohol to aldehydes and secondary alcohols to ketones. It does not effect any other functional group and therefore have high selectivity for oxidation of alcohols. Whereas acidic permanganate, acidic dichromate, chromic anhydride in glacial acetic acid are strong oxidising agents and can do further oxidation to carboxylic acid.
The most suitable reagent for RCH2OH→RCHO is pyridinium chlorochromate (PCC)
CrO3 is not commonly used for the oxidation of alcohols to aldehydes. It is typically used in combination with various other reagents or solvents.
Cr2O4/H2SO4 is also not a commonly known reagent for the oxidation of alcohols to aldehydes.
Tagged under Chemistry · Alcohols, Phenols and Ether · 2022