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

The most suitable reagent for the conversion of R - CH 2 - OH → R - CHO is :
  1. KMnO4
  2. K2Cr2O7
  3. CrO3
  4. PCC (Pyridinium Chlorochromate)

Solution

• 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.

Asked in: JEE Main 2014 (06 Apr)

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