Brönsted Acidic Ionic Liquid as an Efficient Catalyst for Acetylation of Alcohols and Phenols
作者:Abdol R. Hajipour、Leila Khazdooz、Arnold E. Ruoho
DOI:10.1002/jccs.200900058
日期:2009.4
A novel Brönsted acidic room temperature ionicliquid (1‐H‐3‐methyl‐imidazolium bisulfate) is found to catalyze efficiently the acetylation of a wide rang of alcohols as well as phenols with acetic anhydride in good to excellent yields at 50°C under solvent‐free conditions. Products are easily isolated by extraction with ether and the protocol is mild and green, compared to the existing method based