A new reaction pathway in the ester aminolysis catalyzed by glymes and crown ethers |
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Authors: | Basilio Nuno García-Río Luís Mejuto Juan C Pérez-Lorenzo Moisés |
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Institution: | Departamento de Química Física, Facultade de Química, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain. |
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Abstract: | Butylaminolysis of p-nitrophenyl acetate in chlorobenzene in the presence of different kinds of phase-transfer catalysts (crown ethers and glymes) supports the existence of a reaction pathway exhibiting a first-order dependence on the concentration of the phase transfer catalyst and a second-order dependence on the concentration of butylamine. This novel reaction pathway must be included in the mechanism traditionally accepted for the catalysis by phase-transfer agents of aminolysis reactions in aprotic solvents. |
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