Provide an example of the aldehyde and ketone in the Wittig reaction.

An example of the aldehyde and ketone in the Wittig reaction is benzaldehyde and acetone.

The Wittig reaction is a chemical reaction that involves the conversion of a carbonyl compound, such as an aldehyde or ketone, into an alkene using a phosphorus ylide and a base. The reaction is named after its discoverer, Georg Wittig, who was awarded the Nobel Prize in Chemistry in 1979 for his work on the reaction.

Benzaldehyde is an aromatic aldehyde with the chemical formula C6H5CHO. It is commonly used as a flavouring agent and in the production of dyes and perfumes. Acetone, on the other hand, is a ketone with the chemical formula (CH3)2CO. It is a common solvent and is used in the production of many chemicals and plastics.

In the Wittig reaction, benzaldehyde can be converted into stilbene, a compound with two benzene rings connected by a double bond, using a phosphorus ylide and a base. Acetone can also be used as the carbonyl compound in the reaction, and can be converted into a variety of alkenes depending on the phosphorus ylide used.

Overall, the Wittig reaction is a powerful tool for the synthesis of alkenes from carbonyl compounds, and is widely used in organic chemistry research and industry.