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AMINES

278861 Which will not go for diazotization ?

C_{6} H_{5} {NH}_{2}

C_{6} H_{5} {CH}_{2} {NH}_{2}

Explanation:

Only $1^{\circ}$ aromatic amine (primary) aromatic amine) form diazonium salts at low temperature $(0^{\circ} -$ $5^{\circ} C$ ). A reaction is which $- {NH}_{2}$ group is converted into diazo group $(- N + \equiv= N)$ is called diazotization.s
Diazotisation reactions are shown by primary aromatic amine only as the arene diazonium salt formed is stable at 273-278 K. Compound $C_{6} H_{5} {CH}_{2} {NH}_{2}$ is not an aromatic amine, hence will not give the test/reaction.

VITEEE- 2008

AMINES

278863 Fluorobenzene $(C_{6} H_{5} F)$ can be synthesized in the laboratory

1 by heating phenol with

{HF}_{4}

and

KF

2 from aniline by diazotisation followed by heating the diazonium salt with

{HBF}_{4}

3 by direct fluorination of benzene with

F_{2}

gas

4 by reacting bromobenzene with

NaF

solution

AIEEE-2006

NEET DIGITAL LIBRARY

AMINES

278861 Which will not go for diazotization ?

C_{6} H_{5} {NH}_{2}

C_{6} H_{5} {CH}_{2} {NH}_{2}

Explanation:

VITEEE- 2008

AMINES

278863 Fluorobenzene $(C_{6} H_{5} F)$ can be synthesized in the laboratory

1 by heating phenol with

{HF}_{4}

and

KF

2 from aniline by diazotisation followed by heating the diazonium salt with

{HBF}_{4}

3 by direct fluorination of benzene with

F_{2}

gas

4 by reacting bromobenzene with

NaF

solution

AIEEE-2006

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