3 methyl -2- pentene on reaction with HOCI gives

Options

A. 3-chloro -3- methyl pentanol -2
B. 2,3- dichloro-3- methyl pentane
C. 2-chloro-3- methyl pentanol -3
D. 2,3 dimethyl butanol-2

Answer

To solve the question regarding the reaction of 3-methyl-2-pentene with HOCl, we can follow these steps:

### Step 1: Identify the Structure of 3-methyl-2-pentene
3-methyl-2-pentene has the following structure:
- The main chain is pentene (5 carbon atoms) with a double bond between the second and third carbon atoms.
- There is a methyl group attached to the third carbon.

**Structure:**
```
CH3
|
CH3-CH=CH-CH2-CH3
```

### Step 2: Understand the Reaction with HOCl
When 3-methyl-2-pentene reacts with HOCl, the double bond will react with the electrophilic chlorine (Cl) from HOCl. The double bond acts as a nucleophile and attacks the chlorine atom.

### Step 3: Formation of the Carbocation
The attack of the double bond on chlorine leads to the formation of a carbocation. The most stable carbocation will form, which is typically the one that is more substituted.

### Step 4: Nucleophilic Attack by Hydroxide Ion
After the formation of the carbocation, the hydroxide ion (OH-) from HOCl will attack the carbocation. This will lead to the formation of the final product.

### Step 5: Determine the Final Product
The product formed will have a chlorine atom and an alcohol group (OH) attached to the carbon chain. The final structure can be represented as:
```
CH3
|
CH3-CH-CH(Cl)-CH2-CH3
|
OH
```
This compound can be named as 2-chloro-3-methyl-pentanol-3.

### Step 6: Conclusion
The correct answer from the given options is option C: 2-chloro-3-methyl-pentanol-3.

---