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Home » An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Bromine and KOH forms a compound ‘C’ of molecular formula C6H7N. Write the structures and IUPAC names of compounds A, B, and C.
An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Bromine and KOH forms a compound ‘C’ of molecular formula C6H7N. Write the structures and IUPAC names of compounds A, B, and C.
Amines | CBSE | Chemistry | Class 12 | NCERT
An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Bromine and KOH forms a compound ‘C’ of molecular formula C6H7N. Write the structures and IUPAC names of compounds A, B, and C.

Compound ‘C,’ with the molecular formula C6H7N, is created by heating compound ‘B’ with Br2 and KOH, according to the formula. This is a decomposition of Hoffmann bromamide. As a result, compound B is an amide, whereas compound C is an amine. Aniline is the only amine with the chemical formula C6H7N. (C6H5NH2).

Therefore, compound ‘ B ’ (from which ’ C ’ is formed) must be benzamide, (C6 H5 CO NH2).

Further, benzamide is formed by heating compound ‘A’ with aqueous ammonia.

Therefore, compound ‘A’ must be benzoic acid.

The given reactions can be explained with the help of the following equations :

i

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