`E_(2)` reaction (Elimination bimolecular reaction)

Explanation

### Step-by-Step Text Solution for E2 Reaction

**Step 1: Identify the Reactants**
- In an E2 reaction, we typically start with a tertiary alkyl halide (R-X), where R is an alkyl group and X is a halogen (like Cl, Br, or I).

**Step 2: Choose a Strong Base**
- A strong base is required to facilitate the elimination process. Common strong bases used in E2 reactions include sodium hydride (NaH), sodium amide (NaNH2), or potassium tert-butoxide (KOtBu).

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