Table 3.

The catalytic performance comparison of Fe₃O₄@Glycerol-Cu with past research.

Entry	Catalyst	Solvent	Time (min)	Yield (%)	References
1	L-proline	EtOH	95	92	36
2	NaOH	EtOH	240	66	37
3	(SB-DBU)Cl	EtOH	25	95	38
4	Piperidine	EtOH	120	80	39
5	DMAP	EtOH	15	94	40
6	SB-DABCO	EtOH	30	93	41
7	CuSO4.5H2O	H2O	60	95	42
8	GO/α-Fe2O3/CuL	Solvent Free	60	98	43
9	Fe3O4@Glycerol-Cu	EtOH	15	95	This research

Significant values are in bold.