S. Sebti et al., Fluorapatite: new solid catalyst of the Knoevenagel reaction in heterogeneous media without solvent, APP CATAL A, 197(2), 2000, pp. L187-L190
The Knoevenagel reaction is easily carried out without a solvent in the pre
sence of the fluorapatite (FAP) alone, activated by water, benzyltriethylam
monium chloride (BTEAC) and both. The role of water is clearly shown. The F
AP activated with water and the ammonium salt is an excellent catalyst of t
he Knoevenagel condensation, leading to excellent yields in a few minutes.
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