Conjugation, Pericyclic & Aromatic Chemistry

Conjugated dienes, Diels-Alder pericyclic reactions, aromaticity, EAS, NAS, phenol/quinone chemistry

This section contains 6 topics with 0 subtopics, 7 practice problems and 2 flashcards. Each topic includes comprehensive written notes, worked examples with detailed solutions, and interactive lessons for hands-on practice.

Topics Covered

• Conjugated Systems & Dienes — Conjugation, 1,2- vs 1,4-addition, Diels-Alder reaction, MO theory, and UV-Vis spectroscopy
• Aromatic Compounds & Benzene — Aromaticity, Hückel's rule, benzene structure, nomenclature, and aromatic vs antiaromatic
• Electrophilic Aromatic Substitution — EAS mechanism, halogenation, nitration, Friedel-Crafts, directing effects, and multi-step synthesis
• Pericyclic Reactions & the Diels-Alder — Frontier molecular orbital analysis, [4+2] cycloadditions, endo selectivity, electrocyclic reactions, and sigmatropic rearrangements
• Nucleophilic Aromatic Substitution — SNAr addition-elimination through the Meisenheimer complex, benzyne mechanism, and substituent effects
• Phenols & Quinones — Phenol acidity, oxidation to quinones, redox biology, antioxidants, and Kolbe-Schmitt synthesis

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