2023年1月23日 · The reaction of aldehydes and ketones with zinc amalgam (Zn/Hg alloy) in concentrated hydrochloric acid, which reduces the aldehyde or ketone to a hydrocarbon, is called Clemmensen reduction.

Clemmensen reduction is a chemical reaction described as a reduction of ketones or aldehydes to alkanes using zinc amalgam and concentrated hydrochloric acid (HCl). [1][2] This reaction is named after Erik Christian Clemmensen, a Danish-American chemist. [3] Scheme 1: Reaction scheme of Clemmensen Reduction.

2018年8月27日 · The reductant here is “zinc amalgam” (Zn-Hg) which is used under acidic conditions; one method calls for the presence of aqueous HCl, for example: This process works best for aromatic ketones; non-aromatic ketones, not so much.

In practice the term refers to particles of zinc with a surface coating of the amalgam. A gray solid, it is typically used for reduction. It is written as Zn(Hg) in reactions. [1] It is usually prepared by treating an aqueous suspension of zinc with mercuric …

n 1913, the Danish chemist Erik Christian Clemmensen reported that simple ketones and aldehydes reacted with amalgamated zinc (Zn/Hg) in the presence of 40% aqueous hydrochloric acid, and in a hydrophobic solvent, such as toluene, to give the corresponding alkanes after several hours under reflux conditions.

Clemmensen reduction is used to reduce carbonyl compounds (aldehydes and ketones) to hydrocarbons. Zn(Hg) and concentrated HCl are used as clemmensen reagent.

2022年1月18日 · The reaction involving the reduction of aldehyde or ketone into the corresponding alkane by reaction with amalgamated zinc (Zn-Hg) and concentrated hydrochloric acid is called the Clemmensen reduction reaction. It is applicable to aliphatic, aromatic, alicyclic, and heterocyclic compounds.

1) Acetophenone when reacted with Zn (Hg) and HCl in ethyl alcohol easily gives ethyl benzene. This is an example of : (KERALA SET 2010) A) Clemmensen reduction. B) Birch reduction. C) Wolf-Kishner reduction. D) MPV reaction. 1) A. clemmensen reduction explained with mechanism, illustrations and Practice exercises.

2021年2月17日 · The Clemmensen reduction uses amalgamated zinc (Zn/Hg) and hydrochloric acid to reduce an aldehyde or ketone to an alkane. Two proposed mechanisms exist: the “Carbanionic mechanism” involves zinc directly attacking the carbonyl group and the formation of carbanion intermediates, while the “Carbenoid mechanism” occurs on the surface of ...

The Clemmensen Reduction Reaction uses concentrated hydrochloric acid (HCl) and zinc amalgam (Zn/Hg alloy) to convert aldehydes or ketones to alkanes. Erik Christian Clemmensen originally reported this in 1913 and it was given by his name.