Wittig reaction

Wittig reaction
Named after Georg Wittig
Reaction type Coupling reaction
Reaction
aldehyde or ketone
+
triphenyl phosphonium ylide
↓
alkene
+
(Ph)3P=O
Conditions
Typical solvents typically THF or diethyl ether
Identifiers
March's Advanced Organic Chemistry 16–44 (6th ed.)
Organic Chemistry Portal wittig-reaction
RSC ontology ID RXNO:0000015 Y
 N(what is this?)  (verify)
Not to be confused with Wittig rearrangement.

The Wittig reaction or Wittig olefination is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide called a Wittig reagent. Wittig reactions are most commonly used to convert aldehydes and ketones to alkenes. Most often, the Wittig reaction is used to introduce a methylene group using methylenetriphenylphosphorane (Ph3P=CH2). Using this reagent, even a sterically hindered ketone such as camphor can be converted to its methylene derivative.

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