CHEM 3222 1st EditionLecture 1Outline of Last LectureI. N/AOutline of Current LectureOverview of Organic I ConceptsI. Lewis Structure/Formal ChargeII. ResonanceIII. Stability of IntermediatesOverview of Reactions and MechanismsI. AdditionsII. EliminationsIII. SubstitutionsIV. Rearrangements Current LectureA Brief Review of Important Organic I ConceptsI. Lewis Structure/Formal Charge:Write an acceptable Lewis Structure for CO3. Indicate any formal charges.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.II. ResonanceCircle the more stable resonance contributorIII. Stability of intermediates:Rank the following carbocation’s of increasing stability (1 = least stable, 4 = most stable.)Rank the carbanions in order of increasing stability (1 = least stable, 4 = most stable.)A Brief Review of Organic I – Reactions and MechanismsI. AdditionsII. EliminationsIII. SubstitutionsIV. RearrangementsI. Additions: (alkane example, X more EN than Y)Mechanism Tips and Reminders- Identify nucleophile (Nu) and electrophile (E+)- Electron flow is always from electron rich (Nu) to electron poor (E+); never the reverse- Arrow always drawn from a lone pair of bond to a positive or δ+ atom - Mechanism arrows do not show where atoms “go”- In the presence of strong acids or strong electrophiles, do not form strong bases or strongNucleophiles- In the presence of strong bases or strong nucleophiles, do not form strong acids or strong
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