Question

The reagent used in Gattermanns reaction is a) Cu/HBr b) CuBr/HCl c)CuCl2/HCl d) Kl​

Answer 1

HCl

The Gattermann reaction, (also known as the Gattermann formylation and the Gattermann salicylaldehyde synthesis) is a chemical reaction in which aromatic compounds are formylated by a mixture of hydrogen cyanide (HCN) and hydrogen chloride (HCl) in the presence of a Lewis acid catalyst such as AlCl3.

Answer 2

Gattermanns reaction is used for the synthesis of aldehydes.

Explanation:

Gattermanns reaction is also known as Gattermann koch reaction.

In this reaction, an aldehyde is carried out from aromatic or heterocyclic comounds are formylated, HCN  and hydrochloric acid in the presence of a catalyst Aluminium chloride or zinc Chloride.

The reagent used is HCl