Section 5 - Structure and Reactivity of Alkenes

Structure and Reactivity of Alkenes -- Section 5 of Organic Chemistry Notes is 14 pages in length (page 5-1 through page 5-14) and covers ALL you'll need to know on the following lecture/book topics:

SECTION 5 – Structure and Reactivity of Alkenes

5-1 -- Alkenes (“Olefins”)
  · Strength of a Double Bond (d.b) Relative to a Single Bond (s.b)
5-1 -- Stereoisomerism of Alkenes (Cis/Trans)
5-1 -- Nomenclature of Alkenes

  · 6 Rules for Naming Alkenes
  · Numbering the Principal Chain (Main Chain)
  · Identifying Locator #’s for Double Bonds
  · Endings / Suffixes (-ene, -diene, -triene, and –tetraene)
5-3 -- Naming Branched Alkenes
  · Alkenyl Substituents (Alkenes as Branches)
5-4 -- Naming Alkenes that Exhibit Stereoisomerism
  · E-Configurations and Z-Configurations (E/Z Stereochemistry)
  · Priority System within Nomenclature (E/Z Stereochemistry)
5-7 -- Relative Stabilities of Alkenes
  · Trans-Alkenes vs. Cis-Alkenes
  · Cyclic Alkenes
  · Alkyl Group Substitution (Branches) Stabilize Alkenes
5-8 -- Electrophilic Addition Reactions
  · Electrophilic Addition of HX (X = -Cl, -Br, -I)
  · Regiospecific Reactions
5-9 -- Markovnikov's Rule
  · Carbocation Stability
  · Hyperconjugaton and Electron Delocalization
  · Resonance Picture of Carbocations
5-11 -- The Hammond Postulate
5-12 -- Rearrangement of Carbocations

  · 1,2-Hydride Shifts (:H-)
  · 1,2-Alkyl Shifts (:R-)
5-13 -- Degree of Unsaturation
  · Calculating the Degree of Unsaturation
  · General Formula for Degree of Unsaturation

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