Abstract
HY zeolites catalyze the crossed aldol condensation of acetophenone with benzaldehyde, in benzene at 80 °C, to give trans- and cis-chalcones. Together with these expected products, 3,3-diphenylpropiophenone is also produced. In the analogous basic condensation, using phase transfer catalysis, the Michael adduct was not detected, and besides chalcone a small percentage of the Cannizzaro reaction product was observed.
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Climent, M.J., Garcia, H., Primo, J. et al. Zeolites as catalysts in organic reactions. Claisen-Schmidt condensation of acetophenone with benzaldehyde. Catal Lett 4, 85–91 (1990). https://doi.org/10.1007/BF00764874
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DOI: https://doi.org/10.1007/BF00764874