1. Addition of H 2 O across a Double Bond

2. Addition of H 2 O across a double bond Occurs in three different ways: Acid-Catalyzed Hydration Oxymercuration Hydroboration

3. Acid-Catalyzed Hydration OH - adds in a markovnikov fashion, attaching to the most substituted carbon. H + adds like in the addition of HX across a double bond.

4. Acid Catalyzed Hydration: Mechanism

6. Oxymercuration No rearrangement occurs. OH - bonds to the most substituted carbon in the double bond. No rearrangement occurs because no carbocation forms.

7. Oxymercuration: Mechanism

9. Hydroboration the OH - group bonds to the least substituted carbon in what is called “anti-markovnikov addition”

10. Hydroboration: Mechanism

11. What is the Product? ?

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