Examples of 'beckmann rearrangement' in a sentence
Meaning of "beckmann rearrangement"
beckmann rearrangement: Beckmann rearrangement is a chemical reaction that involves the conversion of an oxime functional group to an amide through a rearrangement process. It is named after the German chemist Ernst Otto Beckmann and is commonly used in organic synthesis and pharmaceutical chemistry
Show more definitions
- A rearrangement of an oxime functional group to substituted amides. It has also been successfully performed on haloimines and nitrones. Cyclic oximes and haloimines yield lactams.
How to use "beckmann rearrangement" in a sentence
Basic
Advanced
beckmann rearrangement
Beckmann rearrangement is used for the industrial synthesis of caprolactam see applications below.
This conversion is known as the Beckmann rearrangement.
Production method and beckmann rearrangement catalyst for producing a cyclic lactam compound.
This reaction is now known as the Beckmann rearrangement.
The Beckmann rearrangement is a side reaction.
Apparatuses used in a Beckmann rearrangement reaction.
A Beckmann rearrangement catalyst in a liquid phase has been extensively studied.
He also proposed the mechanism of the Beckmann rearrangement.
A too small amount of a Beckmann rearrangement catalyst is undesirable because a Beckmann rearrangement reaction ceases.
This is similar to that observed in the Beckmann rearrangement of ketoximes.
The Beckmann rearrangement may take place in both the gas phase and the liquid phase.
Thionyl chloride has also been used to promote the Beckmann rearrangement of oximes.
Beckmann rearrangement reaction There will be described a Beckmann rearrangement reaction.
Treatment of this oxime with acid induces the Beckmann rearrangement to give caprolactam.
Beckmann rearrangement can be rendered catalytic using cyanuric chloride and zinc chloride as a co-catalyst.
See also
Discoloration of the product due to impurity formation during the Beckmann rearrangement stage.
Followed by Beckmann rearrangement.
Lactams form by the acid-catalyzed rearrangement of oximes in the Beckmann rearrangement.
The process of claim 1, wherein said Beckmann rearrangement catalyst is a trihaloacetic anhydride.
Step ( b ) of the process represents an application of the well known Beckmann rearrangement.
According to Beckmann rearrangement result in crude e-caprolactam containing a different pattern of impurities.
This reaction is called Beckmann rearrangement.
A Beckmann rearrangement reaction can be conducted under reduced pressure, ambient pressure or increased pressure.
The process of claim 1, wherein said Beckmann rearrangement catalyst comprises a nitrilium cation.
Moreover, we have briefly applied the activation conditions to the interrupted Beckmann rearrangement of ketoximes.
There is, therefore, a need for a Beckmann rearrangement catalyst with least environmental impact.
The cyclohexanone oxime was converted into caprolactam in a multi-stage Beckmann rearrangement process with oleum.
The Beckmann rearrangement in principle may be carried out under acidic, neutral and basic conditions.
For example, e-caprolactam which is industrially useful is produced by Beckmann rearrangement of cyclohexanone oxime.
Pre-preparation of a Beckmann rearrangement catalyst There will be detailed pre-preparation of a Beckmann rearrangement catalyst.
Evaporation of a solvent After the above post-treatment, a Beckmann rearrangement solution is evaporated to remove a solvent.
Pure cyclododecanone can then be converted into cyclododecanone oxime, which yields laurolactam after Beckmann rearrangement.
The process of claim 2 or 3, wherein said Beckmann rearrangement catalyst further comprises a tetrafluoroborate anion.
When treated with a Lewis acid, oxime methanesulfonates undergo facile Beckmann rearrangement.
Beckmann rearrangement of one compound of formula ( I ) into another compound of formula ( I ).
Furthermore, there is no information on the gas-phase Beckmann rearrangement.
The process of claim 4, wherein said Beckmann rearrangement catalyst is N-methylacetonitrilium tetrafluoroborate.
In Method D, lactam 7k can be synthesized from ketone 7j by the Beckmann rearrangement.
A highly diastereoselective thermal [ 2+2 ] cycloaddition and a ring expansion through Beckmann rearrangement generates the functionalised lactam intermediate.
In Method D, lactam 3l can be synthesized from ketone 3k by the Beckmann rearrangement.
Catalyst a is represented by formula ( 2 ), which is included in a Beckmann rearrangement catalyst represented by formula ( 5 ).
You'll also be interested in:
Examples of using Beckmann
Show more
Beckmann arrives and expresses his ideas
The son of the Beckmann foundry family
Beckmann worked in the daguerreotype photographic process
Examples of using Rearrangement
Show more
Rearrangement of the requirements on the certificate of approval
Pericyclic reactions are usually rearrangement or addition reactions
The rearrangement is widely used in organic synthesis
