Environmentally Friendly Esterification of Carboxylic Acids with Triethyl Orthoacetate in Ionic Liquid

Tomonori Yoshino; Hideo Togo

doi:10.1055/s-2004-829058

LETTER

Environmentally Friendly Esterification of Carboxylic Acids with Triethyl Orthoacetate in Ionic Liquid

Tomonori Yoshino^a, Hideo Togo*^a,b
^a Graduate School of Science and Technology, Chiba University, Yayoi-cho 1-33, Inage-ku 263-8522, Chiba, Japan
^b Department of Chemistry, Faculty of Science, Chiba University, Yayoi-cho 1-33, Inage-ku 263-8522, Chiba, Japan
e-Mail: togo@faculty.chiba-u.jp;

Abstract

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Abstract

An operationally simple, inexpensive, efficient, and environmentally friendly esterification of carboxylic acids with triethyl orthoacetate under neutral conditions in a typical room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate, was carried out to provide the corresponding ethyl esters in high yields.

Key words

carboxylic acid - ethyl ester - triethyl orthoacetate - ionic liquid - environmentally friendly

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References

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Most ethyl esters were identified by comparison with authentic commercially available materials, or with spectroscopic and microanalytical data.