Question:
Which among the following is NOT Allylic halide?
Which among the following is NOT Allylic halide?
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Allylic carbon is the $sp^3$ carbon adjacent to the $C=C$ unit.
Updated On: Apr 26, 2026
- $\text{CH}_2 = \text{CH} - \text{CH}_2 - \text{X}$
- $\text{CH}_3 - \text{CH} = \text{CH} - \text{CH}_2 - \text{X}$
- $\text{CH}_3 - \text{CH}_2 - \text{CH} = \text{CH} - \text{CH}_2 - \text{X}$
- $\text{CH}_3 - \text{CH} = \text{CH} - \text{CH}_2 - \text{CH}_2 - \text{X}$
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The Correct Option is D
Solution and Explanation
Step 1: Concept
In an allylic halide, the halogen atom is bonded to an $sp^3$ hybridized carbon atom which is next to a carbon-carbon double bond ($C=C-C-X$).
Step 2: Analysis
- (A), (B), and (C) all follow the pattern $C=C-C-X$. The halogen is on the carbon immediately adjacent to the double bond. - (D) shows the halogen on a carbon that is two carbons away from the double bond ($C=C-C-C-X$).
Step 3: Conclusion
Option (D) does not meet the definition of an allylic halide.
Final Answer: (D)
In an allylic halide, the halogen atom is bonded to an $sp^3$ hybridized carbon atom which is next to a carbon-carbon double bond ($C=C-C-X$).
Step 2: Analysis
- (A), (B), and (C) all follow the pattern $C=C-C-X$. The halogen is on the carbon immediately adjacent to the double bond. - (D) shows the halogen on a carbon that is two carbons away from the double bond ($C=C-C-C-X$).
Step 3: Conclusion
Option (D) does not meet the definition of an allylic halide.
Final Answer: (D)
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