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NEET2026ChemistryChapterActual

An organic compound 'Y' has the structure shown in the figure. Compound 'Y' is treated with an alkaline solution of ammoniacal silver nitrate and heated. Which of the following represents the correct IUPAC name of the major organic species present in the resulting reaction mixture?

Options

  1. A4,4-dimethyl-5-oxohexanoic acid
  2. B4,4-dimethyl-5-oxohexanoate ion
  3. C4,4-dimethylhexanedioate ion
  4. D5-hydroxy-4,4-dimethylhexanoate ion

Correct answer

B. 4,4-dimethyl-5-oxohexanoate ion

Step-by-step solution

Based on the given structure, compound 'Y' contains two functional groups: an aldehyde group ( -CHO ) at one end and a ketone group ( >C=O ) in the chain. Its IUPAC name is 4,4-dimethyl-5-oxohexanal. The reagent given is an alkaline solution of ammoniacal silver nitrate, which is Tollens' reagent ( [Ag(NH₃)₂]^+ OH^- ). Tollens' reagent is a mild oxidizing agent that selectively oxidizes aldehydes to their corresponding carboxylate salts in an alkaline medium. It does not oxidize ketones under normal conditions. The

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