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Question: Answered & Verified by Expert
The most suitable reagent for the conversion of R - CH 2 - OH R - CHO is :
ChemistryAlcohols Phenols and EthersJEE MainJEE Main 2014 (06 Apr)
Options:
  • A KMnO4
  • B K2Cr2O7
  • C CrO3
  • D PCC (Pyridinium Chlorochromate)
Solution:
2069 Upvotes Verified Answer
The correct answer is: PCC (Pyridinium Chlorochromate)

• KMnO4 will oxidize the alcohol to carboxylic acid.
• K2Cr2O7 will also make carboxylic acids.
• ​CrO3 in acetic acid is Jones reagent, it also converts alcohols to carboxylic acid.
•​ PCC is a weak oxidising agent. It limits the oxidation to the aldehyde.

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