Hydrophobic Perfluoroalkylsulfonyl Imide Solid Acid as Catalyst of Esterification and Pechmann Condensation
Ma Zhonghua, He Mengli, Zhang Haijuan, Ma Jingzhong, Yuan Hong
Chin. J. Org. Chem. . 2014, (11): 2255 -2261 .  DOI: 10.6023/cjoc201406027