Alcohol-ester sparation by reaction with acetateA process is disclosed for the isolation of an enantiomerically enriched alcohol from a first mixture of an enantiomerically enriched 1- arylsulfonate-2 -hydroxy-3-butene and an enantiomerically enriched 1 - arylsulfonate- 2-acyloxy-3-butene. The ...
A process is disclosed for the isolation of an enantiomerically enriched ester from a first mixture of an enantiomerically enriched alcohol and an enantiomerically enriched ester, said process comprising the steps of: (a) contacting said mixture with a reagent capable of reacting with the alcohol fun...
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 beconvertedto another ester by reaction (transesterified) with an alcohol, a carboxylic acid, or a third ester in the presence of a...
the esterification reaction between acid and alcohol is reversible: (1) If the ester content in the new liquor is high (e.g., ethyl acetate), the ester will undergo volatilization and hydrolysis, and the amount of ester will be reduced so that the esterification reaction can reach a balance...
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...
The meaning of ESTER is any of a class of often fragrant organic compounds that can be represented by the formula RCOOR' and that are usually formed by the reaction between an acid and an alcohol with elimination of water.
a chemical compound produced by the reaction between an acid and an alcohol with the elimination of a molecule of water, as ethyl acetate, C4H8O2, or methyl methacrylate, C5H8O2. [1850–55; < German (1848), probably b.Essigvinegar andӒtherether] ...
A second IR band is seen usually near 1050 cm−1 for O–CH3 or O–CH2 groups and is called the O–C(H2) stretch band because it tends to vary with the type of alcohol used to form the ester [2]. Again, however, this involves interaction with neighboring single bonds. Vibrational ...
while maintaining the weight ratio of biocatalyst to reactants constant. The reaction vials were maintained at 40 °C and 200 rpm agitation in an orbital shaker. GC-FID analysis of reactants and products was made relative to isobutyl alcohol (i.s.) and utilized DB-WAXetr (30 m, ...
Soak method was adopted to make the KF/CaO solid alkali catalyst and applied in theester exchange reactionof the animal grease-methyl alcohol. 采用浸渍法制备KF/CaO固体碱催化剂,并应用于动物废油脂-甲醇的酯交换(反应)中,考察了催化剂的制备及酯交换(反应)的条件。