2022年9月15日 · 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).

In chemistry, an ester is a compound 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 ′). [1] . These compounds contain a distinctive functional group.

2023年1月23日 · Esters are named as if the alkyl chain from the alcohol is a substituent. No number is assigned to this alkyl chain. This is followed by the name of the parent chain from the carboxylic acid part of the ester with an –e remove and replaced with the ending –oate.

2023年1月23日 · This page defines esters and discusses their simple physical properties such as solubility and boiling points. It includes an introduction to more complicated naturally-occurring esters like animal …

In an ester, the second oxygen atom bonds to another carbon atom (Figure 25.5a.). The names for esters include prefixes that denote the lengths of the carbon chains in the molecules and are derived following nomenclature rules similar to those for inorganic acids and salts. The functional groups for an ester are shown in red below. Figure 25.5a.

Many simple esters are pleasant-smelling liquids that are responsible for the fragrant odors of fruits and flowers. For example, methyl butanoate is found in pineapple oil, and isopentyl acetate is a constituent of banana oil. The ester linkage is also present in animal fats and in many biologically important molecules.

2025年1月30日 · 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. Learn about the different types and reactions of esters and more in this article.

Ester: A molecule or functional group derived by condensation of an alcohol and an acid with simultaneous loss of water. The most common type of ester is carboxylic ester (also called a carboxylate ester; frequently just called an ester), derived from a carboxylic acid.

In this group the ‘-OH’ group of a carboxylic acid has been replaced by a group containing a carbon-containing, ‘-OR’ group. As an example: This ester is 3-methylbutyl ethanoate. It is also known by its common name, isoamyl acetate.

This page explains what esters are and looks at their simple physical properties such as solubility and boiling points. It includes an introduction to more complicated naturally-occurring esters like animal and vegetable fats and oils.