反应详情

Scale up: DBU (3.8 mg, 0.025 mmol) was added under argon to a solution of 4-nitrobenzaldehyde (3 g, 20 mmol), nitrosobenzene (2.14 g, 20 mmol) and catalyst (9 mg, 0.025 mmol) in dichloromethane (100 mL). The reaction mixture was stirred at room temperature for 2 min. The product precipitated as a yellow solid. The solvent was removed under vacuum, and the solid was washed with hexane and ether to yield a pure product (5 g).

1. customThe product precipitated as a yellow solid
2. customThe solvent was removed under vacuum
3. washthe solid was washed with hexane and ether