Dimethyl Sulfoxide → 4-((2-Hydroxyethyl)amino)benzonitrile

Temperatur

100 °C

A mixture of 4-fluorobenzonitrile (6.06 g), 2-aminoethanol (3.71 g), potassium carbonate (8.29 g) and dimethyl sulfoxide (50 mL) was stirred at 100° C. overnight. Water (200 mL) was added to the reaction mixture and the mixture was extracted with ethyl acetate (200 mL×4). The ethyl acetate layer was washed with saturated brine (100 mL), dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluted with ethyl acetate:hexane=30:70, then 50:50, then 80:20, then ethyl acetate) to give 4-[(2-hydroxyethyl)amino]benzonitrile (5.89 g) as a yellow solid.

1. extractionthe mixture was extracted with ethyl acetate (200 mL×4)
2. washThe ethyl acetate layer was washed with saturated brine (100 mL)
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by silica gel column chromatography (
6. washeluted with ethyl acetate

ORD-Eintrag

ord-ab2538ed6ad54a6b8c7f865e1fc1130c

Quelldatensatz

uspto-grants-2014_07

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08784885B2