Réaction #2006410

Équation de réaction

4-aminophenylacetic acid

HCl

methanol

→

3

Rendement 74.0%

Methyl-4-aminophenylacetate

Rendement 74.0%

Conditions de réaction

Traitement

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

Mode opératoire

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%).

Source