Which of the following on reaction with chloroform will given chloretone ?

Options

A. `HNO_(3)`
B. `(CH_(3))_(2) C = O`
C. Chloral
D. `(CH_(3))_(2) CHCHO`

Explanation

To determine which compound reacts with chloroform to give chloretone, we need to analyze the reaction between chloroform (CHCl3) and acetone (C3H6O). Here’s a step-by-step explanation of the process:

### Step 1: Identify the Reactants
The question asks which compound reacts with chloroform to form chloretone. The key reactant we need to consider is acetone (C3H6O).

### Step 2: Understand the Structure of Acetone
Acetone has the structure:
- **C3H6O**: It can be represented as CH3-CO-CH3, where the carbonyl group (C=O) is central, flanked by two methyl groups (CH3).

### Step 3: Reaction with Chloroform
When acetone reacts with chloroform (CHCl3), a base is required to facilitate the reaction. The base can be hydroxide ion (OH-).

### Step 4: Mechanism of the Reaction
1. The carbonyl carbon of acetone is electrophilic and can react with the chloroform.
2. The chloroform has a carbon atom that is partially positive due to the electronegative chlorine atoms.
3. The hydroxide ion (OH-) acts as a nucleophile and attacks the carbonyl carbon of acetone, forming a tetrahedral intermediate.
4. This intermediate then undergoes a substitution reaction where one of the chlorine atoms from chloroform replaces the hydroxyl group.

### Step 5: Formation of Chloretone
The final product of this reaction is chloretone, which is also known as 1,1,1-trichloro-2-methylpropan-2-ol. The structure of chloretone includes:
- A central carbon atom bonded to three chlorine atoms and a hydroxyl group (OH) along with a methyl group.

### Conclusion
Thus, the compound that reacts with chloroform to give chloretone is **acetone**.

### Answer
The correct answer is **acetone** (option B).

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