The Claisen-Schmidt reaction is a condensation reaction that joins two carbonyl compounds, an aldehyde and a ketone, forming a β-hydroxylcarbonyl compound. It involves the reaction of an aldehyde or ketone with an α-hydrogen and an aromatic carbonyl compound. The Claisen-Schmidt condensation has played an important role in synthetic organic chemistry by allowing two carbonyl compounds to join together.

1. Claisen – Schmidt condensation
The Claisen-Schmidt reaction (crossed-aldol reaction) is a condensation reaction of
aldehydes and carbonyl compounds leading to β-hydroxylcarbonyl compounds
and it has played an important role in synthetic organic chemistry
The Claisen–Schmidt condensation is the reaction between an aldehyde or ketone
having an α-hydrogen with an aromatic carbonyl compound

2. Claisen – Schmidt condensation