反应详情

2-Chloro-3-fluoro-4-[4-(N-methyl-N-ethylcarbamoyl)phenylsulphanyl]nitrobenzene (Method 81; 650 mg. 1.76 mmol) was heated with stirring at 75° C. for 45 minutes with of iron powder (1.06 g), EtOH (1.2 ml), water (0.5 ml) and 2 drops of conc. HCl. The mixture was then allowed to cool to room temp, made basic with saturated sodium bicarbonate solution, and EtOAc was added. The reaction mixture was filtered through a bed of diatomaceous earth, washing through thoroughly with water and EtOAc. The organic layers were combined and washed with water, dried, filtered and evaporated to dryness to give the title compound (600 mg) as a pale yellow gum. NMR: 1.0 (s, 3H), 2.8 (s, 3H), 3.2 (d, 2H), 6.2 (s, 1H), 7.0 (m, 2H), 7.2 (m, 3H).

1. additionwas added
2. filtrationThe reaction mixture was filtered through a bed of diatomaceous earth
3. washwashing through thoroughly with water and EtOAc
4. washwashed with water
5. customdried
6. filtrationfiltered
7. customevaporated to dryness