Table 3. Optimization with Regard to the Amount of Reductant for the Formation of Aniline 2a^a.

entry	N2H4·H2O (mL)	yield 2a (%)b
1	0.1	65
2	0.2	72
3	0.3	80
4	0.4	85
5	0.5	96

^aReaction conditions: nitrobenzene (1 mmol) and Pd–Au/TiO₂ (0.1 mol % of Pd–Au).

^bIsolated yields of product 2a.