Comparison studies of 55 wt% PWA/Sr-MOF with the assistance of other catalysts in the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene.

Entry	Catalyst	Conditions	Yield (%)	Time (min)	Ref.
1	NbCl5	Ambient temperature/DCM	95	48(h)	78
2	PVPP-BF3	373 K/solvent-free	94	90	79
3	ZnO NPs	423 K/ionic liquids	80	60	80
4	H5PW10V2O40	373 K/solvent free	67	60	81
5	55 wt% PWA/Sr-MOF	373 K/solvent-free	91.5	120	This work