Bulky Diarylammonium Arenesulfonates as Selective Esterification Catalysts
Kazuaki Ishihara,* Shoko Nakagawa and Akira Sakakura
*Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa,
Nagoya 464-8603, Japan, Email: ishihara
cc.nagoya-u.ac.jp
K. Ishihara, S. Nakagawa, A. Sakakura, J. Am. Chem. Soc., 2005, 127, 4168-4169.
DOI: 10.1021/ja050223v
Abstract
Bulky diarylammonium pentafluorobenzenesulfonates and tosylates serve as efficient dehydration catalysts for the ester condensation reaction of carboxylic acids with equimolar amounts of sterically demanding alcohols and acid-sensitive alcohols. Typically, the esterification is performed in heptane at 80°C in the presence of 1 mol % of the catalyst without removing water. A polymer-bound catalyst is described, which can be recycled more than 10 times without loss of activity.
see article for more examples and reactions
Key Words
Fischer Esterification, Esterification
ID: J48-Y1999-2050
