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JEE Main · 2024 · 05 Apr 2024 · Shift 2 · General Organic Chemistry

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The correct nomenclature for the following compound is:
  1. (A)2-carboxy-4-hydroxyhept-6-enal
  2. (B)2-carboxy-4-hydroxyhept-7-enal
  3. (C)2-formyl-4-hydroxyhept-6-enoic acid✓ Correct
  4. (D)2-formyl-4-hydroxyhept-7-enoic acid

Answer: (C)

Solution

The chain carries both an aldehyde () and a carboxylic acid () group. The carboxylic acid, being the senior characteristic group, is expressed as the suffix ("…oic acid"), while the is cited as the substituent prefix "formyl." Numbering the seven-carbon (hept) chain from the carbon (C1) places at C2, at C4, and the ring double bond between C6–C7, giving 2-formyl-4-hydroxyhept-6-enoic acid.

JEE Main · 2024 · 05 Apr 2024 · Shift 2 · Single correct option

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