Protophilic amide ionic liquid assisted esterification and catalysis mechanism

2009 
Esterification of alcohols by acetic acid has been carried out at room temperature in a group of Bronsted acidic ionic liquids derived from protophilic amides. Good conversion ratio and excellent reaction rate are obtained, and the liquid esters formed a separate phase that is decanted without containing ionic liquid in it. The possible reason of faster and more efficient esterification is: by stabilizing the protonated acetic acid and limiting the alcohol protonation, protophilic amide ionic liquid (PAIL) accelerates the reaction.
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