Use of Ionic Liquids for the Diels-Alder Reaction of Oleochemicals

Recently, ionic liquids have found increasing attention as new reaction media, especially for homogeneously catalyzed syntheses in liquid‐liquid biphasic systems. Their physical and chemical properties are very attractive and can be tuned by a proper choice of the organic cation as well as of the anion. This report presents the use of ionic liquids as reaction media and catalysts for the derivatization of long‐chain fatty acid esters by Diels‐Alder reaction.