Examples of 'wittig reaction' in a sentence
Meaning of "wittig reaction"
wittig reaction - a chemical reaction named after German chemist Georg Wittig, commonly used in organic synthesis to convert aldehydes or ketones into alkenes
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- A chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide to give an alkene and triphenylphosphine oxide.
How to use "wittig reaction" in a sentence
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wittig reaction
Wittig reaction pathways will be discussed first.
This reaction is well known as Wittig reaction.
Wittig reaction which is well known to those skilled in the art.
Styrylthiophenes can also be prepared vía the Wittig reaction.
A Wittig reaction may be used to convert a ketone or an aldehyde to an alkene.
The stage is now wet for intramolecular Wittig reaction.
The Wittig reaction leads to the retinoic acid ester.
Numerous organic chemistry textbooks describe the Wittig reaction.
The Wittig reaction can also be performed in the opposite direction.
Nalmefene can be produced from naltrexone by the Wittig reaction.
The Wittig reaction is carried out in a solvent such as dichloromethane at ambient temperature.
This result is ascribed to steric inhibition of the intramolecular Wittig reaction.
That a weaker base could be used in a Wittig reaction is indeed surprising.
The Wittig reaction provided herein is applicable to many isoprene unit precursors.
This may be carried out using normal Wittig reaction conditions.
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The Wittig reaction is known as an exceedingly useful method for the synthesis of alkenes.
Ii further processing of naltrexone obtained from i to nalmefene optionally by the Wittig reaction.
The procedure in the Wittig reaction can be divided into two steps.
This synthetic pathway begins in a manner similar to the Wittig reaction pathway of FIG.
The Wittig reaction is effected repeatedly or combined with another kind of the Wittig reaction.
Conditions for carrying out a Wittig reaction are known to those skilled in the art.
This step can be carried out according to a usual method of the Wittig reaction.
A final Wittig reaction was utilized to incorporate the glycine moiety and complete the skeleton.
This aldehyde was used without purification and isolation in a Wittig reaction described as follows.
The Wittig reaction is a popular method for the synthesis of alkene from ketones and aldehydes.
Commercially available cyclic ether ketones can be reacted in a Wittig reaction to produce olefinesters.
As above the Wittig reaction is employed using the known appropriately substituted heterocyclic aldehyde derivatives.
The product is dried in a vacum oven and used directly in the next Wittig reaction.
This ylide undergoes a Wittig Reaction when exposed to an aldehyde.
This reaction may be carried out in accordance with a conventional manner of the Wittig reaction.
The conditions of the Wittig reaction are those generally used for Wittig reaction.
Three cyclopropane syntheses via carbene addition and one via a modified Wittig reaction are discussed.
Standard Wittig reaction gave the vinyl derivative XXII.
This reaction may be carried out in accordance with a conventional manner for the Wittig reaction.
The Wittig reaction.
Synthesis of astaxanthin by Wittig reaction.
Conducting a Wittig reaction leading to a vinyl halogenide derivative ;.
Conversion of the aldehyde III into the compound VII by Wittig reaction.
Additionally, the Wittig reaction is being explored as a means of peptide conjugation to QD.
Formation of the 3-vinylpyrrole starting material is accomplished vía a Wittig reaction.
Represents formyl in a Wittig reaction with an alkyltriphenylphosphonium halide such as e . g.
The reaction of a lactol with a phosphorane is classified as the so-called Wittig reaction.
It can be produced by a Wittig reaction or a reaction with a Tebbe 's reagent from cyclohexanone.
Furthermore, the aforementioned intermediates are prepared by means of a Wittig reaction on the aldehyde precursor.
A typical work-up procedure for a Wittig reaction involves first quenching by the dropwise addition of water.
When PB is triarylphosphonium, the conditions of conventional Wittig reaction are used.
The Wittig reaction affords the cis product, while the Horner-Wadsworth Emmons produces the trans olefin.
Alternatively, the carbon chain can be lengthened using a Wittig reaction followed by a hydrogenation reaction.
Wittig reaction may be performed by reacting with the corresponding aldehyde J. Org.
The reaction may be carried out according to a usual Wittig reaction or Wittig-Horner reaction.
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Examples of using Wittig
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Wittig reaction pathways will be discussed first
It is also a precursor to more elaborated Wittig reagents
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