What happens in a Wittig reaction?
The Wittig Reaction allows the preparation of an alkene by the reaction of an aldehyde or ketone with the ylide generated from a phosphonium salt. The geometry of the resulting alkene depends on the reactivity of the ylide.
Why is the Wittig reaction significant?
The Wittig reaction provides a path from aldehydes and ketones to alkenes, and consequently is a valuable tool in organic synthesis. For example, the Wittig reaction will convert an α,β-unsaturated ketone to a conjugated alkene.
What type of reaction is Wittig reaction?
The Wittig reaction or Wittig olefination is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide (often called a Wittig reagent) to give an alkene and triphenylphosphine oxide.
What is Wittig reaction?
What is Wittig Reaction? Wittig reaction is an organic chemical reaction wherein an aldehyde or a ketone is reacted with a Wittig Reagent (a triphenyl phosphonium ylide) to yield an alkene along with triphenylphosphine oxide. This Reaction is named after its discoverer, the German chemist Georg Wittig.
What happens when Wittig reagent reacts with carbonyl compound?
Thus, it is a useful reaction to convert aldehydes or ketones into alkenes. In this reaction Wittig reagent reacts with carbonyl compound and gives alkenes and triphenylphosphine oxide as side product.
What is Wittig olefination?
It is a coupling reaction which is also known as Wittig olefination. It is different from Wittig rearrangement. The reaction is carried out by Wittig reagent which is a triphenyl phosphonium ylide. It is prepared by phosphonium salt and phosphonium salt is prepared by the reaction of triphenylphosphine with an alkyl halide.
How do you make alkene from Wittig reaction?
Wittig Reaction. The Wittig Reaction allows the preparation of an alkene by the reaction of an aldehyde or ketone with the ylide generated from a phosphonium salt. The geometry of the resulting alkene depends on the reactivity of the ylide.