Sodium and caesium cation-exchanged mesoporous MCM-41 are shown to be mild, selective, water-stable and recyclable catalysts for the base-catalysed Knoevenagel condensation and acid-catalysed acetalization and aldol condensation, whereas caesium acetate-impregnated MCM-41 shows strong base activity in the Michael addition.
K. R. Kloetstra and H. van Bekkum, J. Chem. Soc., Chem. Commun., 1995, 1005 DOI: 10.1039/C39950001005
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