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Complete the following reactions:
$straight C subscript 6 straight H subscript 5 straight N subscript 2 Cl space rightwards arrow from left parenthesis ii right parenthesis thin space NaNO divided by Cu space increment to left parenthesis straight i right parenthesis thin space HBF subscript 4 of$

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252. An aromatic compound A on treatment with aqueous ammonia and heating forms compound ‘B’ on heating with Br₂ and KOH forms a compound ‘C’ of molecular formula C₆H₇N. Write the structures and IUPAC names of compound A B and C.

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253.
Why cannot aromatic primary amines be prepared by Gabriel pthalimide synthesis?

Aromatic primary amines cannot be prepared by Gabriel phthalimide synthesis because it used for the preparation of aliphatic primary amines. It involves nucleophilic substitution (S_N2) of alkyl halides by the anion formed by the phthalimide. But aryl halides do not undergo nucleophilic substitution with the anion formed by the phthalimide.
Hence, aromatic primary amines cannot be prepared by Gabriel pthalimide synthesis.

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254. Write the reactions of (i) aromatic, (ii) aliphatic primary amines with nitrous acid.

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255.

Give plausible explanation for each of the following:
Why are amines less acidic than alcohols of comparable molecular masses?

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256.

Give plausible explanation for each of the following:
Why are primary amines higher boiling than tertiary amines?

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257.

Give plausible explanation for each of the following:
Why are aliphatic amines stronger bases than aromatic amines?

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258.

Complete and balance each of the following equations:
$straight C subscript 6 straight H subscript 5 NO subscript 2 plus SN plus HCl space rightwards arrow$