Oxidizing Alcohols: PCC vs Jones (Cr(VI)): Mechanism + Exam Traps

Predict oxidation products: PCC stops at aldehydes (from 1° alcohols), while Jones (chromic acid) gives carboxylic acids; both oxidize 2° → ketones.

  • Reaction: Oxidizing Alcohols: PCC vs Jones (Cr(VI))
  • What it does: Predict oxidation products: PCC stops at aldehydes (from 1° alcohols), while Jones (chromic acid) gives carboxylic acids; both oxidize 2° → ketones.
  • Typical reagents: PCC, CH2Cl2
  • Key intermediate: Varies / context-dependent
  • Driving force: Formation of strong C=O / oxidation state stabilization
  • Exam type: Predict major product
  • Exam type: Mechanism choice

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