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P-BEMP: A New Efficient and Commercially Available User-Friendly and Recyclable Heterogeneous Organocatalyst for the Michael Addition of 1,3-Dicarbonyl Compounds

David Bensa, Thierry Constantieux, Jean Rodriguez*

*UMR CNRS 6178, SYMBIO Equipe RéSO, Réactivité en synthèse Organique, Univ. D'Aix-Marseille, Faculté des Sciences et techniques de Centre de St Jérôme, Case D12, 13397 Marseille Cedex 20, France, Email:

D. Bensa, T. Constantieux, J. Rodriguez, Synthesis, 2004, 923-927.

DOI: 10.1055/s-2004-815996


Michael addition of 1,3-dicarbonyls with various Michael acceptors has been found to be catalyzed by commercially available, user-friendly and recyclable N-phenyl-tris(di-methylamino)iminophosphorane immobilized on polystyrene resin (P-BEMP). The reaction does not require anhydrous solvents or inert atmosphere and proceeds smoothly at room temperature.

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Key Words

1,3-dicarbonyls, heterogeneous catalysis, Michael addition, polymer supported iminophosphoranes

ID: J66-Y2004-2060