Water → 5-Bromo-6-methylpyridine-2-carbonitrile

Temperatur

110 °C

3,6-Dibromo-2-methylpyridine (4.9 g, 19.53 mmol), copper(I)cyanide (1.75 g, 19.53 mmol) and N,N-dimethylformamide (20 mL) were combined in a sealable vessel with a stirbar. The resulting mixture was sealed, stirred vigorously and heated at 110° C. for 4 h. The resulting mixture was diluted with ethyl acetate, poured into a separatory funnel containing water and the layers were separated. The water layer was extracted with ethyl acetate twice. The combined organics were washed with brine, dried over magnesium sulfate, filtered and concentrated under reduced pressure. The resulting solid was purified by silica gel chromatography (10% ethyl acetate in hexanes) to give the title compound as a white solid (1.88 g, 9.54 mmol, 49% yield). MS (ESI) m/z 197.3 [M]+.

1. customThe resulting mixture was sealed
2. additionpoured into a separatory funnel
3. customthe layers were separated
4. extractionThe water layer was extracted with ethyl acetate twice
5. washThe combined organics were washed with brine
6. dry with materialdried over magnesium sulfate
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customThe resulting solid was purified by silica gel chromatography (10% ethyl acetate in hexanes)

ORD-Eintrag

ord-93e08671759b46fe9a5d27300bf34941

Quelldatensatz

uspto-grants-2015_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09193692B2