Table 7. Effect of temperature on the condensation of 14 H-dibenzo [a. j] xanthene using GO-CuFe₂O₄ nanocatalyst^a.

Entry	Solvent	Catalyst	Catalyst loading	Temp (°C)	Yieldb (%)
1.	Water	GO-CuFe2O4	20 wt % GO/CuFe2O4	r.t	8
2.	Water	GO-CuFe2O4	20wt % GO/CuFe2O4	35	30
3.	Water	GO-CuFe2O4	20wt % GO/CuFe2O4	70	58
4.	Water	GO-CuFe2O4	20 wt % GO/CuFe2O4	100	78
5.	Water	GO-CuFe2O4	20 wt % GO/CuFe2O4	125	92
6.	Solventless	GO-CuFe2O4	20 wt % GO/CuFe2O4	r.t	10
7.	Solventless	GO-CuFe2O4	20 wt % GO/CuFe2O4	35	40
8.	Solventless	GO-CuFe2O4	20 wt % GO/CuFe2O4	70	75
9.	Solventless	GO-CuFe2O4	20 wt % GO/CuFe2O4	100	88
10.	Solventless	GO-CuFe2O4	20 wt % GO/CuFe2O4	125	98

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