Advanced Organic Chemistry Practice Problems Online

The reaction below proceeds via a cascade electrocyclization–cycloaddition sequence. Draw the mechanism and identify the pericyclic steps.

Week 1 — Mechanisms & arrow pushing fundamentals Week 2 — Acid–base chemistry, pKa, and reactivity trends Week 3 — Nucleophilic substitution & elimination (SN1, SN2, E1, E2) problems Week 4 — Addition reactions to alkenes/alkynes & radical reactions Week 5 — Conjugation, resonance, aromaticity, and electrophilic aromatic substitution Week 6 — Enolate chemistry, enolates vs. enols, and carbonyl alpha-functionalization Week 7 — Carbonyl reaction families: nucleophilic addition, acyl substitution, reductions, oxidations Week 8 — Pericyclic reactions: cycloadditions, electrocyclizations, sigmatropic shifts (orbital symmetry, FMO) Week 9 — Organometallic reagents & catalytic cycles (Pd, Ni, Cu, organoboranes, organolithium, Grignard) Week 10 — Retrosynthesis: strategy and multi-step planning (protecting groups, chemoselectivity) Week 11 — Spectroscopy & structure determination (1D/2D NMR, IR, MS, UV-Vis) Week 12 — Mixed advanced problems, timed practice, and error analysis advanced organic chemistry practice problems

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