Reacción #2006410

Ecuación de reacción

4-aminophenylacetic acid

HCl

methanol

→

3

Rendimiento 74.0%

Methyl-4-aminophenylacetate

Rendimiento 74.0%

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroThe reaction mixture was then quenched with a saturated aqueous solution of NaHCO3
2. 2
   OtroThe methanol was evaporated under reduced pressure
3. 3
   Extracciónthe aqueous layer was extracted several times with AcOEt
4. 4
   SecadoThe combined organic extracts were dried over (MgSO4)
5. 5
   Otroevaporated
6. 6
   OtroThe crude residue was purified by flash chromatography

Procedimiento

To a solution of 4-aminophenylacetic acid (10 g, 66.2 mmol) in methanol (150 mL) at room temperature was added HCl conc. (37% 25 mL). The mixture became yellow and was stirred overnight. The reaction mixture was then quenched with a saturated aqueous solution of NaHCO3. The methanol was evaporated under reduced pressure and the aqueous layer was extracted several times with AcOEt. The combined organic extracts were dried over (MgSO4) and evaporated. The crude residue was purified by flash chromatography using hexane/AcOEt (4:1) as solvent mixture yielding 3 as a yellow oil (9.44 g, 74%).

Fuente