Imine Formation: Turning Carbonyls into C=N Bonds

Learn imine formation step-by-step: carbinolamine intermediate, dehydration, and why pH control matters. Includes imine vs enamine notes and common exam distractors.

  • Reactants: Aldehyde/ketone + 1° amine
  • Catalyst: Mild acid (pH ~4–5 is the common teaching point)
  • Key intermediates: Carbinolamine → iminium
  • Driving strategy: Remove water to push equilibrium
  • Variant note: 2° amine gives enamine instead of imine
  • Exam type: Predict the major product
  • Exam type: Choose conditions
  • Exam type: Failure modes / distractors

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