Conversion of Ethyne into But-2-enal

Explanation

To convert ethyne (C2H2) into but-2-enal (C4H6O), we will follow a series of chemical reactions. Here’s a step-by-step breakdown of the conversion:

### Step 1: Oxymercuration of Ethyne
- **Starting Compound**: Ethyne (C2H2)
- **Reagents**: HgSO4 (mercuric sulfate) and dilute H2SO4 (sulfuric acid)
- **Reaction**: Ethyne reacts with mercuric sulfate in the presence of dilute sulfuric acid to form an intermediate vinyl alcohol.

**Reaction**:
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