Listar Catálise Supramolecular por título
Mostrando ítems 6-11 de 11
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Micellar effects on aromatic esters hydrolysis
(Elsevier, 2014-07)The alkaline hydrolysis of two aromatic esters, 2-naphthyl acetate (2NA) and phenyl acetate (PhA) has been tackled in this work. The reaction has been followed in water and in the presence of cationic surfactants with ... -
Potentiometric characterisation of cyclodextrin inclusion complexes of local anaesthetics
(Taylor and Francis Ltd., 2011-09)The complexation of several local anaesthetics by β and γ-cyclodextrins was studied by potentiometry with glass electrode. Tetracaine and dibucaine complexation constants were determined at 25°C in the presence of 0.1 M ... -
Salting coefficient of triethanolamine in major seawater salts
(Elsevier, 2006-01)Activity coefficient of triethanolamine (TEA) in major seawater salts (NaCl, KCl, CaCl2 and MgCl2) has been determinated using the distribution method. It increases slowly in KCl, remains almost constant in NaCl and decreases ... -
Solvent Effects versus Concentration Effects in determining Rates of Base-catalysed Keto-enol Tautomerization
(Royal Society of Chemistry, 2005)Solvent effects of homogeneous media (such as solvent-water mixtures) in chemical reactivity may be interpreted as due to solvent polarity and/or molecular structure of solvent molecules. In microheterogeneous media (such ... -
Tautomerization of 2-acetylcyclohexanone in assemblies of cationic surfactants. Nitrosation of the enol.
(Royal Society of Chemistry, 2005)The kinetic study of the keto-enol interconversion of 2-acetylcyclohexanone (ACHE) has been performed in organic solvents such as dimethylsulfoxide (DMSO), 1-propanol (1-PrOH), 2-propanol (2-PrOH), methanol (MeOH), dioxane, ... -
The salting coefficient and size of alkylamines in saline media at different temperatures: estimation from Pitzer equations and the mean spherical approximation
(Elsevier, 2001-04)The renewed theoretical interest in the proton transfer associated to the amino group together with the scarcity of acid-base studies of amines in moderate to concentrated saline media focussed our attention on the study ...