Robinson Annulation: Michael Addition + Aldol to Build Rings

Learn the Robinson annulation step-by-step: Michael addition to form a 1,5‑dicarbonyl, then intramolecular aldol condensation to build a cyclohexenone. Includes practice + key traps.

  • Two-part sequence: (1) Michael addition → (2) Intramolecular aldol condensation
  • Product motif: Cyclohexenone (often)
  • Key intermediate: 1,5‑dicarbonyl
  • Big exam skill: Recognize when a Michael donor + acceptor can cyclize via aldol
  • Exam type: Synthesis / retrosynthesis
  • Exam type: Predict the major product
  • Exam type: Choose the mechanism

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