Catalytic activity of the nanocatalyst for the reduction of nitrobenzene to aniline with N₂H₄·H₂O 80%^a.

Entry	R	Product	Time (min)	Yield (%)
1	H		10	98
2	4-OH		30	90
3	4-NH2		40	98
4	2-OH		15	97
5	4-COMe		20	92
6	3-Me		35	90
7	4-Me		30	91
8	2-NH2		60	95
9	3-COMe		45	94
10	3-CHO		60	93
11	3-OH		30	96
12b	3-NH2-5-NO2		20	92

^aAll reactions were carried out with 1 mmol of nitroarene, 2 mmol of N₂H₄·H₂O 80% and 20 mg of rGO@Fe₃O₄/ZrCp₂Cl_x in refluxing EtOH (2 mL).

^bIn this reaction 3 mmol of N₂H₄·H₂O 80% was used.