Reacción #8252

Ecuación de reacción

3-Fluoro-4-(4-methylimidazol-1-yl)nitrobenzene

ammonium formate

→

title compound

Rendimiento 90.5%

5-Amino-2-(4-methylimidazol-1-yl)fluorobenzene

Rendimiento 90.5%

Disolventes

methanol

tetrahydrofuran

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturacooled to 0° under nitrogen
2. 2
   Filtraciónfiltered through celite, celite
3. 3
   Lavadowashed with methanol (200 ml), and filtrate
4. 4
   Otroevaporated to dryness
5. 5
   OtroThe residue was partitioned between ethyl acetate (800 ml) and 10% aqueous sodium bicarbonate (250 ml)
6. 6
   OtroThe organic layer was separated
7. 7
   Lavadowashed with brine (250 ml)
8. 8
   Secadodried (magnesium sulfate)
9. 9
   Otroevaporated

Procedimiento

3-Fluoro-4-(4-methylimidazol-1-yl)nitrobenzene (64.7 g, 0.293 M) was dissolved in a mixture of methanol (200 ml) and tetrahydrofuran (800 ml), cooled to 0° under nitrogen, and treated with ammonium formate (99.3 g, 1.46 M) followed by palladium on charcoal (10%, 2.5 g). The mixture was stirred at ambient temperature for 48 hours, filtered through celite, celite washed with methanol (200 ml), and filtrate evaporated to dryness. The residue was partitioned between ethyl acetate (800 ml) and 10% aqueous sodium bicarbonate (250 ml). The organic layer was separated, washed with brine (250 ml), dried (magnesium sulfate) and evaporated to give title compound (50.6 g).

Fuente