4-Methylmorpholine → HCID 68988679, Verbindung

Temperatur

0 °C

A solution of 2-bromo-3-cyclopentyl-propionyl chloride (1.46 g, 6.09 mmol) in tetrahydrofuran (32.1 mL, 0.19M) cooled to 0° C. was treated with N-methylmorpholine (0.66 mL, 6.09 mmol). The reaction mixture was stirred at 0° C. for 5 min. After this time, the reaction was treated with pyrazin-2-ylamine (0.58 g, 6.09 mmol) and allowed to warm to 25° C. The reaction stirred at 25° C. for 2 d. After this time, the reaction mixture was partitioned between water (100 mL) and ethyl acetate (2×150 mL). The organics were dried over sodium sulfate, filtered and concentrated in vacuo. Silica gel column chromatography (AnaLogix, 115 g, 10-50% ethyl acetate/hexanes gradient) afforded 2-bromo-3-cyclopentyl-N-pyrazin-2-yl-propionamide (0.43 g, 24%) as a light brown solid; ES+-HRMS m/e calcd for C12H16N3OBr [M+H+] 298.0550, found 298.0550.

1. temperatureto warm to 25° C
2. stirringThe reaction stirred at 25° C. for 2 d
3. customAfter this time, the reaction mixture was partitioned between water (100 mL) and ethyl acetate (2×150 mL)
4. dry with materialThe organics were dried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo

ORD-Eintrag

ord-6364eb04cb1e4a3fa064e0862e68e25d

Quelldatensatz

uspto-grants-2012_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08258134B2