85733-01-3Relevant articles and documents
Enzymatic esterification in aqueous miniemulsions
Aschenbrenner, Eugen M.,Weiss, Clemens K.,Landfester, Katharina
experimental part, p. 2434 - 2444 (2009/12/08)
Monoesters of various linear carboxylic acids (C7-C12) with ω-phenyl-labeled primary alcohols (C1-C5) were synthesized in aqueous miniemulsions with various lipases as biocatalysts. The reactants were dispersed in an aqueous solution of a nonionic surfact
Dehydration reactions in water. Bronsted acid-surfactant-combined catalyst for ester, ether, thioether, and dithioacetal formation in water
Manabe, Kei,Iimura, Shinya,Sun, Xiang-Min,Kobayashi, Shu
, p. 11971 - 11978 (2007/10/03)
Dehydration reactions in water have been realized by a surfactant-type catalyst, dodecylbenzenesulfonic acid (DBSA). These reactions include dehydrative esterification, etherification, thioetherification, and dithioacetalization. In these reactions, DBSA and substrates form emulsion droplets whose interior is hydrophobic enough to exclude water molecules generated during the reactions. Detailed studies on the esterification revealed that the yields of esters were affected by temperature, amounts of DBSA used, and the substrates. Esters were obtained in high yields for highly hydrophobic substrates. On the basis of the difference in hydrophobicity of the substrates, unique selective esterification and etherification in water were attained. Furthermore, chemospecific, three-component reactions under DBSA-catalyzed conditions were also found to proceed smoothly. This work not only may lead to environmentally benign systems but also will provide a new aspect of organic chemistry in water.
Dehydration reactions in water. Surfactant-type Bronsted acid-catalyzed direct esterification of carboxylic acids with alcohols in an emulsion system [2]
Manabe,Sun,Kobayashi
, p. 10101 - 10102 (2007/10/03)
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