The reaction of HBr with 1-propene in the presence of peroxides will produce primarily

Options

A. 2-bromopropane
B. 1-bromopropane
C. 2-bromopropene
D. 1.2-dibromopropane

Explanation

To solve the question regarding the reaction of HBr with 1-propene in the presence of peroxides, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are 1-propene (C3H6) and HBr (hydrobromic acid).

### Step 2: Understand the Reaction Conditions
The presence of peroxides indicates that the reaction will follow the anti-Markovnikov addition rule, also known as the peroxide effect.

### Step 3: Apply the Anti-Markovnikov Rule
In the absence of peroxides, HBr would add to the double bond of 1-propene according to Markovnikov's rule, where the bromine would attach to the more substituted carbon. However, with peroxides present, the bromine will add to the less substituted carbon atom.

### Step 4: Draw the Structure of 1-Propene
1-propene can be represented as:
```
H H
\ /
C
/ \
H C
|
H
```
This structure shows that the double bond is between the first and second carbon atoms.

### Step 5: Determine the Product
When HBr adds to 1-propene in the presence of peroxides, the bromine (Br) will attach to the terminal carbon (the less substituted carbon), and the hydrogen (H) will attach to the second carbon. The resulting product will be 1-bromopropane (CH3-CH2-CH2Br).

### Step 6: Write the Final Product Structure
The structure of 1-bromopropane can be represented as:
```
H H
\ /
C
/ \
H C
|
Br
```

### Conclusion
The primary product of the reaction of HBr with 1-propene in the presence of peroxides is 1-bromopropane.

### Final Answer
The correct answer is **1-bromopropane**.

---