Question

Which among the following is allylic halide?

• A. \(\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{X}\)
• B. \(\text{C}_6\text{H}_5-\text{CH}_2-\text{X}\)
• C. \(\text{CH}_2 = \text{CH}-\text{CH}_2-\text{X}\)
• D. \(\text{CH}_3-\text{CH} = \text{CH}-\text{X}\)

Hint:

An allylic halide has the halogen on a carbon adjacent to a C=C double bond.

Answer 1

The Correct Option is C

Step 1: Look for C=C-C-X
Allylic means the pattern $\text{C=C-C-X}$.

Step 2: Test each
Only (C) shows this pattern. Option (D) has X on the sp$^2$ carbon itself, so it is vinylic.

Final Answer:
Option (C) has the C=C-C-X pattern of an allylic halide. \[ \boxed{\text{(C)}} \]