Ammonium Chloride → HCID 117987829, Verbindung

Temperatur

-78 °C

To a solution of DIEA (0.827 mL) in THF (90 mL) was added 1.6 M n-butyllithium hexane solution (3.64 mL) at −78° C., and the mixture was stirred under argon atmosphere at −78° C. for 30 min. To the reaction mixture was added a solution of 5-bromo-3-fluoro-2-methoxypyridine (1.00 g) in THF (30 mL) at −78° C., and the mixture was stirred under argon atmosphere at −78° C. for 1 hr. To the reaction mixture was added cyclopentanecarbaldehyde (0.572 g) at −78° C., and the mixture was stirred under argon atmosphere at −78° C. for 1 hr. To the reaction mixture was added saturated aqueous ammonium chloride solution at −78° C., and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (430 mg).

1. stirringthe mixture was stirred under argon atmosphere at −78° C. for 1 hr
2. stirringthe mixture was stirred under argon atmosphere at −78° C. for 1 hr
3. extractionthe mixture was extracted with ethyl acetate
4. washThe organic layer was washed with saturated brine
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

ORD-Eintrag

ord-ec32e8677ef1416bb497deb3cd0f61a1

Quelldatensatz

uspto-grants-2016_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09371320B2