Crossed Aldol Condensation is a chemical reaction that involves the formation of a β-hydroxy carbonyl compound through the reaction of two different aldehydes or ketones. This process typically requires a base catalyst, which helps deprotonate one of the carbonyl compounds, allowing it to react with another carbonyl compound. The result is a larger molecule that can undergo dehydration to form an α,β-unsaturated carbonyl compound. This reaction is useful in organic synthesis for creating complex molecules and can lead to a variety of products depending on the starting materials used. The versatility of Aldol Condensation makes it a valuable tool in the fields of organic chemistry and pharmaceutical development.