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Theoretically the ring monobromination o...

Theoretically the ring monobromination of 4-bromo-1,2-dimethylbenzene could produce ____ isomers .

A

5

B

4

C

3

D

2

Text Solution

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To determine the number of isomers produced by the ring monobromination of 4-bromo-1,2-dimethylbenzene, we can follow these steps: ### Step 1: Draw the Structure of 4-bromo-1,2-dimethylbenzene The structure consists of a benzene ring with two methyl groups (-CH3) at the 1 and 2 positions and a bromine atom (-Br) at the 4 position. ### Step 2: Identify the Positions for Monobromination In electrophilic aromatic substitution reactions, the bromine can be added to positions on the benzene ring that are not already occupied by other substituents. In this case, the available positions for bromination are: - Position 3 (ortho to the bromine) - Position 5 (para to the bromine) - Position 6 (meta to the bromine) ### Step 3: Count the Possible Isomers Since bromination can occur at positions 3, 5, and 6, we can produce three different isomers: 1. 3-bromo-4-bromo-1,2-dimethylbenzene 2. 5-bromo-4-bromo-1,2-dimethylbenzene 3. 6-bromo-4-bromo-1,2-dimethylbenzene ### Conclusion The total number of isomers produced by the ring monobromination of 4-bromo-1,2-dimethylbenzene is **3**. ---
To determine the number of isomers produced by the ring monobromination of 4-bromo-1,2-dimethylbenzene, we can follow these steps: ### Step 1: Draw the Structure of 4-bromo-1,2-dimethylbenzene The structure consists of a benzene ring with two methyl groups (-CH3) at the 1 and 2 positions and a bromine atom (-Br) at the 4 position. ### Step 2: Identify the Positions for Monobromination In electrophilic aromatic substitution reactions, the bromine can be added to positions on the benzene ring that are not already occupied by other substituents. In this case, the available positions for bromination are: - Position 3 (ortho to the bromine) ...
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