Table 6. Effect of solvent on the condensation of 14H-dibenzo [a. j] xanthene using GO-CuFe₂O₄ nanocatalyst^a.

Entry	Solvent	Catalyst	Catalyst loading	Temp (°C)	Yieldb (%)
1.	H2O	GO-CuFe2O4	20 wt %	125	92
2.	Methanol	GO-CuFe2O4	20 wt %	125	88
3.	Ethanol	GO-CuFe2O4	20 wt %	125	84
4.	DCM	GO-CuFe2O4	20 wt %	125	42
5.	Acetonitrile	GO-CuFe2O4	20 wt %	125	50
6.	Toluene	GO-CuFe2O4	20 wt %	125	60
7.	DMSO	GO-CuFe2O4	20 wt %	125	68
8.	Hexane	GO-CuFe2O4	20 wt %	125	20
9.	Solvent less	GO-CuFe2O4	20 wt %	125	98

^aReaction conditions: 2-naphthol (2 mmol) and benzaldehyde (1 mmol). ^bIsolated yield.