反应详情

2-(4-Bromo-2-ethyl-benzyl)-isoindole-1,3-dione (4 g, 11.7 mmol) and hydrazine (1.8 mL, 58.3 mmol) in chloroform:ethanol (1:1.5, 250 mL) were refluxed for 4 h. The mixture was cooled to room temperature and filtered through a pad of celite. The solution was diluted in water and partitioned. The organic layer was washed with water, saturated sodium bicarbonate, then saturated sodium chloride, dried (Na2SO4), filtered, and then concentrated in vacuo to a yellow oil (2.2 g, 88%). 1H NMR (300 MHz, CDCl3): δ ppm 1.23 (t, J=7.54 Hz, 3 H) 1.65 (s, 2 H) 2.66 (q, J=7.60 Hz, 2 H) 3.84 (s, 2 H) 7.19–7.23 (m, 1 H) 7.30–7.34 (m, 2 H).

1. filtrationfiltered through a pad of celite
2. additionThe solution was diluted in water
3. custompartitioned
4. washThe organic layer was washed with water, saturated sodium bicarbonate
5. dry with materialsaturated sodium chloride, dried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated in vacuo to a yellow oil (2.2 g, 88%)