Sonication Effects on Ester Hydrolysis in Alcohol-water Mixtures

Ultraheliefektid estri hüdrolüüsile alkoholi-veesegudes

Sander Piiskop ； Hannes Hagu ； Jaak Järv ； Siim Salmar ； Ants Tuulmets

《Proceedings of the Estonian Academy of Sciences.Chemistry》 56卷4期 (2007/12) Pp. 199-206

並列摘要

Kinetics of the neutral hydrolysis of 4-nitrophenyl chloroacetate was investigated in water and in the presence of 1 mol% of ethanol, propanol, and n-butyl alcohol without sonication and under ultrasound at 25kHz. Similarly, the kinetics of the acid-catalysed hydrolysis of n-propyl acetate in ethanol-water binary solutions was investigated without sonication and under ultrasound at 22kHz. The results are discussed together with corresponding data for ethyl and n-butyl acetate from previous works. It was concluded that for ester hydrolyses the solvent effects in an aqueous alcohol binary mixture are limited almost entirely to the hydrophobic ground-state stabilization by the organic co-solvent.

並列關鍵字

binary solvent mixtures ； ester hydrolysis ； hydrophobic interactions ； ultrasound