Reaktion #492999

Reaktionsgleichung

N-(5-(5-(azetidin-3-yl)-1,2,4-oxadiazol-3-yl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide hydrochloride

potassium carbonate

cyanogen bromide

→

N-(5-(5-(1-cyanoazetidin-3-yl)-1,2,4-oxadiazol-3-yl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide

Lösungsmittel

dichloromethane water

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe reaction was cooled to room temperature
2. 2
   Sonstigethe layers were separated
3. 3
   WaschenThe aqueous layer was washed with 3 times with DCM
4. 4
   Trocknendried over anhydrous sodium sulfate
5. 5
   EinengenThe combined organics were concentrated
6. 6
   WaschenThe resulting solid was washed with hexanes

Vorschrift

To a stirring mixture of N-(5-(5-(azetidin-3-yl)-1,2,4-oxadiazol-3-yl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide hydrochloride (21) (200 mg, 0.487 mmol), potassium carbonate (202 mg, 1.46 mmol) and cyanogen bromide (103 mg, 0.974 mmol) in dichloromethane:water (1:1, 15 mL) were heated at 45° C. for 1.5 hours. The reaction was cooled to room temperature and the layers were separated. The aqueous layer was washed with 3 times with DCM and dried over anhydrous sodium sulfate. The combined organics were concentrated. The resulting solid was washed with hexanes to give N-(5-(5-(1-cyanoazetidin-3-yl)-1,2,4-oxadiazol-3-yl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide (82). MS m/z 400.14 (M+1)+.

Quelle