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  1. ester, any of a class of organic compounds that react with water to produce alcohols and organic or inorganic acids. Esters derived from carboxylic acids are the most common. The term ester was introduced in the first half of the 19th century by German chemist Leopold Gmelin.

    • Lactone

      Lactone, any of a class of cyclic organic esters, usually...

  2. 15 Σεπ 2022 · Esters feature a carbon-to-oxygen double bond that is also singly bonded to a second oxygen atom, which is then joined to an alkyl or an aryl group. The esters shown here are ethyl acetate (a) and methyl butyrate (b).

  3. en.wikipedia.org › wiki › EsterEster - Wikipedia

    In chemistry, an ester is a functional group derived from an acid (organic or inorganic) in which the hydrogen atom (H) of at least one acidic hydroxyl group (−OH) of that acid is replaced by an organyl group (R ′). Analogues derived from oxygen replaced by other chalcogens belong to the ester category as well. [1]

  4. An ester bond forms when a hydroxyl (-OH) group from the glycerol bonds with the carboxyl (-COOH) group of the fatty acid. An H from glycerol combines with an OH from the fatty acid to make water. The formation of an ester bond is a condensation reaction. For each ester bond formed a water molecule is released.

  5. 4 Ιαν 2020 · An ester is an organic compound where the hydrogen in the compound's carboxyl group is replaced with a hydrocarbon group. Esters are derived from carboxylic acids and (usually) alcohol. While carboxylic acid has the -COOH group, the hydrogen is replaced by a hydrocarbon in an ester.

  6. Esters contain a carbonyl group with a second oxygen atom bonded to the carbon atom in the carbonyl group by a single bond. In an ester, the second oxygen atom bonds to another carbon atom (Figure 25.5a.).

  7. 14 Νοε 2017 · Ester Definition. Esters are the derivatives of carboxylic acids in which the hydrogen of carboxylic acid (-COOH) has been replaced by an alkyl group (-R) like methyl, ethyl or a benzene ring like phenyl. The ester functional group may be represented as -COOR.

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