How can the following conversions be brought about :
Acetaldehyde to propan-2-ol.

Explanation

To convert acetaldehyde (CH₃CHO) to propan-2-ol (CH₃CHOHCH₃), we can use a Grignard reagent, specifically methyl magnesium bromide (CH₃MgBr). Here’s a step-by-step breakdown of the process:

### Step 1: Formation of Grignard Reagent
- **Reaction**: Methyl magnesium bromide (CH₃MgBr) is prepared from methyl bromide (CH₃Br) and magnesium (Mg) in dry ether.
- **Equation**:
\[ CH₃Br + Mg \xrightarrow{\text{dry ether}} CH₃MgBr \]
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