Table 2.
Entry | RC6H4NO2 | Time (h) | Yield (%)b | TOF (10−3) (s−1)c |
---|---|---|---|---|
1 | H | 0.5 | 98 | 544 |
2 | 4-OH | 0.5 | 98 | 544 |
3 | 2-OH | 1 | 92 | 256 |
4 | 4-NH2 | 1 | 95 | 264 |
5 | 4-CH3 | 0.5 | 96 | 533 |
6 | 4-OCH3 | 0.5 | 95 | 528 |
7 | 4-CN | 1 | 92 | 256 |
8 | 2-NH2 | 2 | 88 | 122 |
9 | 4-CHO | 1.5 | 85 | 157 |
10 | 4-Cl | 1.5 | 80 | 148 |
aReaction conditions: Nitroarene (1.0 mmol), NH2NH2. H2O (3.0 mmol), catalyst (0.1 mol%), EtOH:H2O (1:2, 3.0 mL), 80 °C; bIsolated yields; cturnover frequencies (TOF = (Yield/Time)/Amount of catalyst (mol).