Identify the major product obtained in the following reaction : 2-acetylbenzaldehyde (benzene ring with ortho -COCH ₃ and -CHO) + 2 [Ag(NH₃)₂]^+ + 3 ^- OH xrightarrowΔ major product 1. ring with -CH(OH)CH ₃ and -COO ^- (structure) 2. ring with -CH(OH)CH ₃ and -CH ₂ OH (structure) 3. ring with -COCH ₃ and -CH ₂ OH (structure) 4. ring with -COCH ₃ and -COO ^- (structure)

Answer: 4. ring with -COCH ₃ and -COO ^- (structure) Key idea: Tollens' reagent [Ag(NH₃)₂]^+ in base is a mild oxidant: it oxidises aldehydes to carboxylate but does not touch ketones or the ring. The -CHO group becomes -COO^- and silver is deposited; the -COCH₃ remains unchanged. Product: ring with -COCH₃ and -COO^- : option 4. Options 1-3 involve reduction, which Tollens' reagent cannot do.

Topic: Tests to distinguish aldehydes and ketones· Organic Compounds Containing Oxygen

Identify the major product obtained in the following reaction :2-acetylbenzaldehyde (benzene ring with ortho -COCH_3 and -CHO) + 2[Ag(NH_3)_2]^+ + 3 ^-OH Δ major product

Identify the major product obtained in the following reaction :

2-acetylbenzaldehyde (benzene ring with ortho -COCH\(_3\) and -CHO) + 2\([\mathrm{Ag(NH_3)_2}]^+\) + 3 \(^-\)OH \(\xrightarrow{\Delta}\) major product

reactant and four structure options

1. ring with -CH(OH)CH\(_3\) and -COO\(^-\) (structure)

2. ring with -CH(OH)CH\(_3\) and -CH\(_2\)OH (structure)

3. ring with -COCH\(_3\) and -CH\(_2\)OH (structure)

4. ring with -COCH\(_3\) and -COO\(^-\) (structure)

Doubtly Asked 30 Oct 2026 NEET UG 2023 Practice test neet Save WhatsApp Report

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Answer: 4. ring with -COCH\(_3\) and -COO\(^-\) (structure)

Key idea: Tollens' reagent \([\mathrm{Ag(NH_3)_2}]^+\) in base is a mild oxidant: it oxidises aldehydes to carboxylate but does not touch ketones or the ring.

The \(\mathrm{-CHO}\) group becomes \(\mathrm{-COO^-}\) and silver is deposited; the \(\mathrm{-COCH_3}\) remains unchanged. Product: ring with \(\mathrm{-COCH_3}\) and \(\mathrm{-COO^-}\): option 4. Options 1-3 involve reduction, which Tollens' reagent cannot do.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Identify the major product obtained in the following reaction :2-acetylbenzaldehyde (benzene ring with ortho -COCH_3 and -CHO) + 2[Ag(NH_3)_2]^+ + 3 ^-OH Δ major product

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