(redirected fromCarboxylic acid ester) Thesaurus Medical Encyclopedia es·ter (ĕs′tər) n. Any of a class of compounds derived from an oxyacid, usually resulting from the reaction of an oxyacid and an alcohol with the elimination of water. ...
Carboxylic esters of allylic alcohols are prepd. by reaction of an aliphatic or cycloaliphatic olefin (I) (having 4-16C atoms in its main chain and with a non-terminal double bond), with a carboxylic acid in the presence of hydrogen peroxide with an palladium salt or complex as catalyst. ...
Esters may also be obtained by reaction of acid halides or acid anhydrides with alcohols or by reaction of salts of carboxylic acids with alkyl halides. One ester may be converted to another ester by reaction (transesterified) with an alcohol, a carboxylic acid, or a third ester in the ...
An ester is a chemical compound derived from an acid (organic or inorganic) in which at least one –OH hydroxyl group is replaced by an –O– alkyl (alkoxy) group, as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides are fatty acid esters of glycerol; they are...
a她死了在除夕的夜晚 She has died in the lunar New Year's Eve night[translate] aMethod for producing alcohol by hydrogenating lactone and carboxylic acid ester in liquid phase 方法为生产酒精通过在液体阶段氢化内酯和羧酸酯类[translate]
both of which have very pleasant aromas (banana and rose). As with ethyl esters, their concentrations in recently fermented wines are higher than those permitted by the value of theequilibrium constant, and they are therefore hydrolyzed to generate the acid and the alcohol, leading to a reductio...
e.g. an ion exchange resin containing a - -SO.sub.3 H and/or -- COOH groups. A liquid phase containing the carboxylic acid component, e.g. a fatty acid mixture, flows down the column reactor from one esterification tray to the next downward one against an upflowing alcohol vapour ...
1. A catalyst for use in the hydrogenation of a C2to C12carboxylic acid to produce an alcohol and/or a carboxylic acid ester which catalyst comprises from 1 to 10% by weight of a first component which is molybdenum or tungsten from 1 to 10% by weight of a second component which is a...
The compounds, which are produced by reacting aliphatic or phenolic alcohol functions with active chlorocarboxylic acid esters and amines, can contain one or several of said ammonium salts on a carrier molecule comprising a system of anellated rings or long-chained hydrocarbons. Said compounds are ...
PURPOSE:To advantageously obtain an ester, by carrying out dehydration reaction of a carboxylic acid with an alcohol or ester interchange reaction of an ester with carboxylic acid or alcohol using a hydrous oxide of a metal belonging to group III or IV of the periodic table as a catalyst. CON...