Question

Give 10 differences between Vilsmeier-Haack reaction, Gattermann-Koch reaction, and Reimer-Tiemann reaction.​

Answer 1

I do not know anything about this

Answer 2

Differences between Vilsmeier-Haack reaction, Gattermann-Koch reaction, and Reimer-Tiemann reaction:

Explanation:

Vilsmeier-Haack reaction:

• The Vilsmeier–Haack reaction is that the chemical process of a substituted organic compound with phosphorus oxychloride an electron-rich arene to make an aryl organic compound or organic compound.
• The reaction is known as once Anton Vilsmeier and Albrecht Haack. Vilsmeier-Haack reaction is additionally referred to as Vilsmeier-Haack formylation.
• The Vilsmeier-Haack reaction is an organic reaction accustomed to convert an electron-rich aromatic ring to an aryl organic compound victimization DMF, associate degree acid chloride, associate degree liquid workup.
• The electron-rich aromatic ring then attacks the iminium particle with a loss of aromaticity.
• A method of preparation of Vilsmeier-Haack chemical agent is provided wherever di(trichloromethyl) carbonate reacts with N, N-dimethylformamide to supply a Vilsmeier chemical agent, which can be used expeditiously for chlorination of plant product-6-acetate or sucrose-6-benzoate and different sucrose acylates.

Gattermann-Koch reaction :

• The Gattermann reaction could be a chemical process during which aromatic compounds are developed by a combination of compound and acid within the presence of a Lewis acid catalyst like AlCl₃.
• It's named on the behalf of the German chemist Ludwig Gattermann and is comparable to the Friedel–Crafts reaction.
• In Gattermann – Koch reaction, aromatic hydrocarbon is treated with monoxide in an associate degree acidic medium in presence of anhydrous chloride to make benzaldehyde.
• During this reaction, anhydrous chloride used as a catalyst. it's an electrophilic substitution reaction.

• The Gattermann–Koch reaction, named on the behalf of the German chemists Ludwig Gattermann and Julius Arnold Koch, could be a variant of the Gattermann reaction during which monoxide (CO) is employed rather than compound.
• A reaction of the kind C6H5CHO accustomed to introduce organic compound teams onto aromatic hydrocarbon rings.
• It's utilized in the formation of the economic manufacture of benzaldehyde. a combination of acid and monoxide is a skillful aromatic hydrocarbon employing a Lewis acid like chloride is employed as a catalyst.

Reimer-Tiemann reaction:

• The Reimer–Tiemann reaction could be a chemical process used for the ortho-formylation of phenols with the only example is that the conversion of phenol to salicylaldehyde.
• This reaction was discovered by Karl Reimer and Ferdinand Tiemann. The Reimer in question was Karl Reimer, not the less well-known Carl Ludwig Reimer.
• Phenol reacts with chloroform in presence of NaOH to make salicylaldehyde (0-Hydroxy benzaldehyde).
• This reaction is understood because of the Reimer-Tiemann reaction.
• On treating phenol with chloroform within the presence of caustic soda, a –CHO cluster is introduced at the ortho position of benzene. This reaction is understood as Reimer - Tiemann reaction.
• The intermediate substituted benzal chloride is hydrolyzed within the presence of alkali to supply salicylaldehyde.
• The Reimer - Tiemann reaction is distributed on phenols in presence of chloroform and that we get an organic compound because of the upshot.
• It takes through an electrophilic substitution pathway.