Cyclohexene on reaction with `Br_(2)`in `C CI_(4)` yields

Options

A. meso`-1,2`-dibromocyclohexene
B. `(+-)`trans`-1,2-`dibromocyclohexene
C. cis-`1,2-`dibromocyclohexene
D. trans`-1,2-`dibromochclohexane

Explanation

To solve the question of what cyclohexene yields when reacted with Br₂ in CCl₄, we can follow these steps:

### Step 1: Identify the Reactants
We start with cyclohexene, which is an alkene, and bromine (Br₂) dissolved in carbon tetrachloride (CCl₄).

### Step 2: Understand the Reaction Mechanism
The reaction of alkenes with bromine in a non-polar solvent like CCl₄ typically proceeds via an anti-addition mechanism. This means that the bromine atoms will add to opposite sides of the double bond.

### Step 3: Draw the Structure of Cyclohexene
Cyclohexene has a six-membered carbon ring with one double bond. The double bond is between two carbon atoms in the ring.

### Step 4: Perform the Anti-Addition
When Br₂ is added to cyclohexene, the double bond opens up, and the two bromine atoms will add to the two carbon atoms that were involved in the double bond. Since this is an anti-addition, the bromine atoms will end up on opposite sides of the ring.

### Step 5: Identify the Product
The product formed from the anti-addition of Br₂ to cyclohexene is trans-1,2-dibromocyclohexane. This product has the two bromine atoms on opposite sides of the cyclohexane ring, creating a chiral center.

### Step 6: Consider Stereochemistry
Since the product is trans-1,2-dibromocyclohexane, it can exist as two enantiomers (mirror images of each other). Therefore, the final product is a racemic mixture of the two enantiomers.

### Final Answer
The reaction of cyclohexene with Br₂ in CCl₄ yields trans-1,2-dibromocyclohexane.

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