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JEE Main2014ChemistryAlcohols Phenols and EthersActual

The most suitable reagent for the conversion of R - CH 2 - OH → R - CHO is :

Options

  1. AKMnO 4
  2. BK 2 Cr 2 O 7
  3. CCrO 3
  4. DPCC (Pyridinium Chlorochromate)

Correct answer

D. PCC (Pyridinium Chlorochromate)

Step-by-step solution

• KMnO 4 will oxidize the alcohol to carboxylic acid. • K 2 Cr 2 O 7 will also make carboxylic acids. • ​CrO 3 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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