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Sonocatalysis and Basic Clays. Michael Addition Between Imidazole and Ethyl Acrylate

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Abstract

Under ultrasound activation, imidazole was condensed with ethyl acrylate using two basic clays (Li+ and Cs+ montmorillonites). The clay catalysts were characterized by chemical analyses, nitrogen adsorption isotherms, and X-ray diffraction. Under sonochemical conditions N-substituted imidazole can be obtained with a high activity and selectivity. The conversion increases with the basicity of the clays and the ultrasonic exposition time. The yield presents a maximum for 0.1 g of Cs+ montmorillonite after 60 min of sonication.

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Authors and Affiliations

  1. Dpto. de Química Inorgánica y Química Técnica, Universidad Nacional de Educación a Distancia (UNED), C/Senda del Rey 9, E-28040, Madrid, Spain

    R.M. Martín-Aranda, E. Ortega-Cantero & M.L. Rojas-Cervantes

  2. Dpto. de Química Inorgánica, Facultad de Ciencias Químicas, Universidad de Salamanca, Pza. de la Merced s/n, E-37008, Salamanca, Spain

    M.A. Vicente-Rodríguez & M.A. Bañares-Muñoz

Authors
  1. R.M. Martín-Aranda
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  2. E. Ortega-Cantero
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  3. M.L. Rojas-Cervantes
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  4. M.A. Vicente-Rodríguez
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  5. M.A. Bañares-Muñoz
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Martín-Aranda, R., Ortega-Cantero, E., Rojas-Cervantes, M. et al. Sonocatalysis and Basic Clays. Michael Addition Between Imidazole and Ethyl Acrylate. Catalysis Letters 84, 201–204 (2002). https://doi.org/10.1023/A:1021480020425

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  • DOI: https://doi.org/10.1023/A:1021480020425

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