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			<gallery>
			File:AminoacidCondensation.svg\|Condensation reaction between amino acids forming a peptide bond.
			File:Condensationaldolique.png\|Condensation reaction in aldol condensation.
			</gallery>

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==Condensation Reaction==
A condensation reaction is a chemical reaction in which two molecules combine to form a larger molecule, with the simultaneous elimination of a smaller molecule, such as water or alcohol. This type of reaction is commonly observed in organic chemistry and plays a crucial role in the synthesis of various compounds.

===Mechanism===
The mechanism of a condensation reaction involves the formation of a covalent bond between two molecules, resulting in the release of a small molecule as a byproduct. The reaction typically occurs between a molecule containing a functional group that can act as a nucleophile, and another molecule containing a functional group that can act as an electrophile.

During the reaction, the nucleophile attacks the electrophile, leading to the formation of a new bond. At the same time, a leaving group, often a hydroxyl group (-OH) or an alcohol group (-OR), is eliminated from one of the molecules. This elimination of a small molecule is what distinguishes a condensation reaction from other types of reactions.

===Applications===
Condensation reactions are widely used in various fields, including organic synthesis, polymerization, and biochemistry. They are essential for the production of many important compounds, such as esters, peptides, and nucleic acids.

In organic synthesis, condensation reactions are employed to create complex molecules by joining smaller building blocks together. For example, the formation of peptide bonds between amino acids in protein synthesis is a condensation reaction. Similarly, the synthesis of DNA and RNA involves the condensation of nucleotides.

Polymerization, the process of combining monomers to form polymers, also relies on condensation reactions. In this case, the small molecule byproduct is often water. For instance, the condensation of monomers like ethylene glycol and terephthalic acid leads to the formation of the polymer known as polyethylene terephthalate (PET), which is used in the production of plastic bottles.

===Examples===
One of the most well-known condensation reactions is the esterification reaction, which involves the combination of an alcohol and an acid to form an ester. This reaction is commonly used in the production of fragrances, flavors, and solvents.

Another example is the aldol condensation, where an aldehyde or ketone reacts with itself or another carbonyl compound to form a β-hydroxy carbonyl compound. This reaction is important in the synthesis of various organic compounds, including sugars and pharmaceuticals.

===See Also===
* [[Polymerization]]
* [[Esterification]]
* [[Aldol Condensation]]

===References===
<references/>

[[Category:Chemical Reactions]]
[[Category:Organic Chemistry]]
[[Category:Biochemistry]]
[[Category:Polymer Chemistry]]

Condensation reaction - Revision history

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