The catalytic activity of different polymers containing axime groups has been tested in the hydrolysis of structurally different esters of p-nitrophenol. The mechanism of hydrolysis, supported by indirect kinetic evidence, seems not to involve a pre-equilibrium with a polymer-ester complex. The reaction was investigated under pseudo-first-order conditions with an excess of oxime polymer. The values of the second-order catalytic rate coefficients suggest a reaction rate mainly controlled by steric effects and hydrophobic interaction between the ester hydrocarbon residue and the macromolecular chain.
Synthetic catalytic polymers containing oxime groups: Effect of substrate structure on esterolysis of p-nitrophenyl esters / A. M., E. Ranucci, Ruggeri, G. Gianni. - In: REACTIVE POLYMERS, ION EXCHANGERS, SORBENTS. - ISSN 0167-6989. - 8:3(1988), pp. 267-272.
Synthetic catalytic polymers containing oxime groups: Effect of substrate structure on esterolysis of p-nitrophenyl esters
E. Ranucci;
1988
Abstract
The catalytic activity of different polymers containing axime groups has been tested in the hydrolysis of structurally different esters of p-nitrophenol. The mechanism of hydrolysis, supported by indirect kinetic evidence, seems not to involve a pre-equilibrium with a polymer-ester complex. The reaction was investigated under pseudo-first-order conditions with an excess of oxime polymer. The values of the second-order catalytic rate coefficients suggest a reaction rate mainly controlled by steric effects and hydrophobic interaction between the ester hydrocarbon residue and the macromolecular chain.
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