Bromobenzene can be dehydrobrominated to benzyne by three possible routes. Explain. Which paths are desirable ?

Explanation

To explain how bromobenzene can be dehydrobrominated to form benzyne through three possible routes, we will analyze each mechanism step by step and determine which paths are desirable.

### Step 1: Understanding Dehydrohalogenation
Dehydrohalogenation is an elimination reaction where a hydrogen halide (in this case, HBr) is removed from a molecule. For bromobenzene, this involves the removal of bromine (Br) and a hydrogen atom (H) from adjacent carbon atoms.

### Step 2: E1 Mechanism
1. **Formation of Carbocation**: In the E1 mechanism, the first step involves the departure of the bromine atom, resulting in the formation of a carbocation. The bromobenzene loses Br⁻, creating a positively charged intermediate.

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