What are correct steps to convert acetaldehyde to acetone?

Options

A. `CH_(3)MgBr,H_(2)O`,Oxidation
B. Oxidation, `Ca(OH)_(2)`, Heat
C. Reduction, KCN, Hydrolysis
D. Oxidation `C_(2)H_(5)`ONa, heat

Explanation

To convert acetaldehyde (CH3CHO) to acetone (CH3COCH3), follow these steps:

### Step 1: React Acetaldehyde with Grignard Reagent
- **Reaction**: Acetaldehyde reacts with a Grignard reagent, specifically methylmagnesium bromide (CH3MgBr).
- **Equation**:
\[ \text{CH}_3\text{CHO} + \text{CH}_3\text{MgBr} \rightarrow \text{CH}_3\text{C(OH)(CH}_3)\text{MgBr} \]
- **Product**: This reaction produces an intermediate compound, which is an alcohol (isopropyl alcohol).

### Step 2: Hydrolyze the Intermediate
- **Reaction**: The intermediate is then hydrolyzed by adding water.
- **Equation**:
\[ \text{CH}_3\text{C(OH)(CH}_3)\text{MgBr} + \text{H}_2\text{O} \rightarrow \text{CH}_3\text{C(OH)(CH}_3) + \text{Mg(OH)Br} \]
- **Product**: This results in isopropyl alcohol (CH3CHOHCH3).

### Step 3: Oxidation of Isopropyl Alcohol
- **Reaction**: The isopropyl alcohol is then oxidized using an oxidizing agent like potassium dichromate (K2Cr2O7) in an acidic medium.
- **Equation**:
\[ \text{CH}_3\text{C(OH)(CH}_3) \xrightarrow[\text{H}^+]{\text{K}_2\text{Cr}_2\text{O}_7} \text{CH}_3\text{COCH}_3 \]
- **Product**: This oxidation yields acetone (CH3COCH3).

### Final Summary
The complete conversion from acetaldehyde to acetone involves:
1. Reacting acetaldehyde with methylmagnesium bromide to form an alcohol.
2. Hydrolyzing the intermediate to produce isopropyl alcohol.
3. Oxidizing isopropyl alcohol to produce acetone.

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