The major product of the following reaction is : phthalic acid (benzene-1,2-dicarboxylic acid) + NH ₃ xrightarrowstrong\ heating 1. 2-carbamoylbenzoic acid (see figure) 2. phthalimide (see figure) 3. 2-aminobenzoic acid (see figure) 4. benzene-1,2-diamine (see figure)

Topic: Carboxylic acids: acidic strength· Organic Compounds Containing Oxygen

The major product of the following reaction is :phthalic acid (benzene-1,2-dicarboxylic acid) + NH_3 strong\ heating

The major product of the following reaction is :

phthalic acid (benzene-1,2-dicarboxylic acid) + NH\(_3\) \(\xrightarrow{strong\ heating}\)

reactant scheme and four structure options

1. 2-carbamoylbenzoic acid (see figure)

2. phthalimide (see figure)

3. 2-aminobenzoic acid (see figure)

4. benzene-1,2-diamine (see figure)

Doubtly Asked 30 Oct 2026 NEET UG 2019 Practice test neet Save WhatsApp Report

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Answer: 2. phthalimide (see figure)

Phthalic acid reacts with ammonia to give the ammonium salt; strong heating removes water in two steps (amide, then cyclic imide). The final product is phthalimide, a five-membered ring with the \(\mathrm{-CO-NH-CO-}\) unit. The other options (carbamoylbenzoic acid, anthranilic acid, o-phenylenediamine) are not the final product on strong heating. Answer: option (2).

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

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The major product of the following reaction is :phthalic acid (benzene-1,2-dicarboxylic acid) + NH_3 strong\ heating

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