反应详情

In 10 ml of ethanol, 1 g (2.88 mmol) of 2-nitro-4,5,3',4'-tetramethoxybenzophenone (prepared according to Example 2) was hydrogenated on 100 mg of platinum/activated carbon (5 percent Pt, moist, H2O content 50 percent) at 40° C. and a hydrogen pressure of 2 bar. After 5 h, the reaction mixture was cooled to room temperature, and 10 ml of acetonitrile was added. The catalyst was filtered off, and the filtrate was evaporated under reduced pressure to give 0.88 g of 2-amino-4,5,3',4'-tetramethoxybenzophenone as a beige solid. The yield of the product was 96 percent of theory.

1. filtrationThe catalyst was filtered off
2. customthe filtrate was evaporated under reduced pressure