Question

Question #b239d

Answer 1

I assume you mean going from aniline (aminobenzene) to benzamide (benzoylamide). The easiest way I can see is to transform it back into benzene and go from there.

(Keep in mind though that this is highly theoretical; some of these reactions are rather dangerous, particularly the arenediazonium salt in step 2, and the acyl chloride in step 4.)

1. Reaction with sodium nitrite in cold acid generates the arenediazonium salt, `"C"_6"H"_6"N"_2"Cl"`. These should be treated as temporary intermediates used in further reactions, because they may explode on you.
2. Hypophosphorous acid reduces the arenediazonium salt all the way down to benzene.
3. A Friedel-Crafts Acylation with phosgene gives benzoyl chloride. Obviously, this should be done with a high level of safety equipment.
4. A violent reaction with ammonia generates the final product, benzamide.