Benzonitrile can be prepared from benzaldehyde on treatment with

Question

Benzonitrile can be prepared from benzaldehyde on treatment with (A) NH3 (B) NH3 followed by hydrogenation with Ni (C) NH2OH (D) NH2OH followed by dehydration with acetic anhydride

Tardigrade Admin · Accepted Answer

Benzonitrile can be prepared from benzaldehyde on treatment with NH 2 OH followed by dehydration with acetic anhydride. This reaction occur via Beckmann rearrangement.

For benzonitrile formation, the key step is a hydride shift followed by deprotonation of nitrogen that ultimately gives benzonitrile

Q. Benzonitrile can be prepared from benzaldehyde on treatment with

$N H_{3}$

$N H_{3}$ followed by hydrogenation with Ni

$N H_{2} O H$

$N H_{2} O H$ followed by dehydration with acetic anhydride

Hydrogen cyanide

Q. Benzonitrile can be prepared from benzaldehyde on treatment with

NH3​

NH3​ followed by hydrogenation with Ni

NH2​OH

NH2​OH followed by dehydration with acetic anhydride

Hydrogen cyanide

$N H_{3}$

$N H_{3}$ followed by hydrogenation with Ni

$N H_{2} O H$

$N H_{2} O H$ followed by dehydration with acetic anhydride