How will you bring about the following conversions in not more than two steps?
Propanal to butanone

Explanation

To convert propanal (CH3CH2CHO) to butanone (CH3CH2C(=O)CH3) in not more than two steps, we can follow these steps:

### Step 1: Reaction with Grignard Reagent
1. **React Propanal with a Grignard Reagent**:
- Take propanal (CH3CH2CHO) and react it with methyl magnesium bromide (CH3MgBr).
- The Grignard reagent acts as a nucleophile and attacks the carbonyl carbon of propanal. This leads to the formation of a magnesium alkoxide intermediate.

**Reaction**:
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