Which of the following amines undergo nu...

Which of the following amines undergo nucleophilic acylation reactions on treatment with acid chlorides or acid acylation reactions on treatment with acid chlorides or acid anhydrides to form substituted amides ? .

Primary amines only

Secondary amines only

Primary and secondary amines

Primary secondary and tertiary amines .

Text Solution

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The correct Answer is:

Only primary and secondary amines (aliphatic as well as aromatic amines) but not tertiary amines because they do not carry a hydroogen atom bonded to the nitrogen atom
`C_(6)H_(5)NH_(2)+(CH_(3)CO)_(2)Orarr C_(6)H_(5)NHCOCH_(3)+CH_(3)COOH`
`(CH_(3))_(2)NH+C_(6)H_(5)COCI rarr (CH_(3))_(2)underset(Amide)(NCO_(6)H_(5))`

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Which of the following amines undergo acylation reaction ?

`CH_(3)CH_(2)NH_(2)`

`C_(6)H_(5)NH_(2)`

`(CH_(3)CH_(2))_(2)NH`

`(CH_(3))_(3)N`

Which of the following statements are correct about nucleophilic acyl substitution ?

`RCOCl` is more reactive than `RCON_3` (acid azide).

`RCON_3` is more reactive then enhydride.

`RCON_3` is less reactive than anhydride.

Esters are less reactive than anhydrides but more reactive tham amides.

Which of the following acids is not capable of undergoing HVZ reaction ?

Ethanoic acid

Propionic acid

`(CH_(3))_(2) CHCOOH`

Trichloroacetic acid