Make the structure of following organic compounds-
`1 "Isopropylidene Bromide" " "2. "Isobutylene glycol" " "3. "Trimethylene glycol"`

Explanation

To draw the structures of the given organic compounds, we will follow a systematic approach for each compound.

### Step-by-Step Solution:

1. **Isopropylidene Bromide:**
- **Identify the structure:** The name "isopropylidene" indicates that we have an isopropyl group (which is a branched alkyl group with the formula -C(CH₃)₂) connected to a carbon that has two bromine atoms attached.
- **Draw the structure:**
- Start with the isopropyl group:
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