title: Hydrophobic N,N-diarylammonium pyrosulfates as dehydrative condensation catalysts under aqueous conditions.
abstract: Oil-soluble N,N-diarylammonium pyrosulfates as nonsurfactant-type catalysts for the dehydrative ester condensation under aqueous conditions are described. Preheat treatment of dibasic sulfuric acid with bulky N,N-diarylamines generates water-tolerant salts of pyrosulfuric acid as active catalyst species. The present catalysts in water can also widely be applied to unusual selective esterifications and dehydrative glycosylation.
authors: EcoTopia Science Institute, Nagoya University, Japan, Graduate School of Engineering, Nagoya University, Nagoya, 464-8603, Japan.
authors: Akira
authors: A
authors: Sakakura
authors: Yoshiki
authors: Y
authors: Koshikari
authors: Matsujiro
authors: M
authors: Akakura
authors: Kazuaki
authors: K
authors: Ishihara