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NEET 2023 Phase 1 · ChemistryPrevious Year Question

The compound shown — (a benzene ring with a unit, then an sp carbon bearing adjacent to the ) — is an example of a:

Answer: (C) (C) Allylic halide. An allylic halide has the halogen on an sp carbon directly attached to a double bond.

NEET 2023 Phase 1 Chemistry question — The compound shown — C6H5-CH=CH-CH(Br)-CH2-CH3 (a benzene ring with a -CH=CH- unit, then…
  1. A.(A) Benzylic halide
  2. B.(B) Aryl halide
  3. C.(C) Allylic halide✓
  4. D.(D) Vinylic halide

Correct Answer

(C) (C) Allylic halide

Solution & Explanation

An allylic halide has the halogen on an sp carbon directly attached to a double bond. Here the -bearing carbon is bonded to the unit (allylic position) and is two carbons away from the ring, so it is not benzylic; it is sp, so not vinylic or aryl. Hence it is an allylic halide.

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