Reaktion #68817

Reaktionsgleichung

HATU

5-Bromopyridin-2-amine

Hunig's Base

2-(methylthio)acetic acid

→

N-(5-bromo-pyridin-2-yl)-2-methylsulfanyl-acetamide

Ausbeute 21.0%

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction mixture was evaporated
2. 2
   Extraktionextracted three times with saturated Na2CO3 solution and three times with ethyl acetate
3. 3
   ExtraktionThe organic layers were extracted three times with 1N HCl solution
4. 4
   Sonstigeevaporated to dryness
5. 5
   Filtrationfiltered
6. 6
   Sonstigethe solid evaporated to dryness

Vorschrift

(1 g, 5.78 mmol) 5-Bromopyridin-2-amine was dissolved in DMF (40 ml) and HATU (2.64 g, 6.94 mmol, 1.2 equiv.) was added. After 15 minutes at room temperature Hunig's Base (6.0 ml, 34.7 mmol, 6 equiv.) and 2-(methylthio)acetic acid (736 mg, 6.94 mmol, 1.2 equiv.) were added. The mixture was stirred for 72 hours at room temperature. The reaction mixture was evaporated and extracted three times with saturated Na2CO3 solution and three times with ethyl acetate. The organic layers were extracted three times with 1N HCl solution and evaporated to dryness. The crude product was suspended in pentane, filtered and the solid evaporated to dryness. The desired N-(5-bromo-pyridin-2-yl)-2-methylsulfanyl-acetamide (312 mg, 21% yield) was obtained as a yellow solid, MS: m/e=258.9/260.8 (M+H+).

Quelle