Ch5 - Chapter 5 Outline Naming Alkenes 5.1 & 5.4...

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1 Chapter 5 – Outline E2 Reactions of RX’s 5.14 - 5.16 – Mechanism (Regiochemistry & Stereochemistry) E1 Reaction of RX’s 5.18 - Mechanism (Very similar to S N 1 Summary slide: Is it SN2, E2, SN1 or E1? Consecutive E2 reactions of Dihalides 9.7 – Geminal and Vicinal Dihalides Extra things you must know Intramolecular Substitution reactions ( old reaction, different reagents ) Rules for multi-reaction step problems Summary of Polar Reaction rules Naming Alkenes 5.1 & 5.4 – Mechanism (Regiochemistry & Stereochemistry)
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2 1 1 5.1 Naming Alkenes Following Rules already laid down 1) Name the parent chain (include the double bond) 2) Start counting at end closest to double bond. If two choices- closest branch. (if a ring, start nearest the first branch, but carbon 2 must be the other carbon in the double bond) 3) Write full name designating location of double bond and the change in the suffix. C H 3 CH 3 C H 3 CH 3 (S)-1,6-dimethylcyclohexene 2,3-dimethyl-3-hexene** (Not on Test!! ) OH Group outranks double bonds Again, name the parent chain (include the double bond) Start counting at end closest to OH group. (This has highest priority) Simply drop last e and add “# - ol” to parent O H Cl Example 5-chloro-3- cis -hexen-2-ol CH 3 CH 3 **there is some stereochemistry that is not yet captured in this name**
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3 F Br C H 3 H E / Z Tools (E is “opposite”, Z is “Zame”)
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Ch5 - Chapter 5 Outline Naming Alkenes 5.1 & 5.4...

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