Table 3 Comparative study of the efficiency of Fe₃O₄@RF/Pr-NH₂ with the former catalysts in the Knoevenagel condensation.

1

Fe₃O₄-PPCA nanoparticles

Cat. (0.5 g), CH₂Cl₂, 25 °C

2 h

⁸⁶

2

HAP-g-Fe₂O₃

Cat. (25 mg), water, 50 °C

3 h

⁸⁷

3

FeNPs/PPD@rGO

Cat. (0.05 g), toluene, 40 °C

3.5 h

⁸⁸

4

Mg@PS-anthra

Cat. (0.05 g), solvent-free, RT

2 h

⁸⁹

5

Zn-MOF

Cat. (0.0693 g), toluene, 50 °C

48 h

⁹⁰

6

Fe₃O₄@RF/Pr-NH₂

Cat. (0.01 g), EtOH, 60 °C

30 min

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