Water → 3-Bromo-5-chloro-1H-pyrrolo(2,3-b)pyridine

Temperatur

0 °C

A solution of bromine (3.5 ml) in chloroform (40 ml) was added dropwise to an ice-cold solution of the 5-chloro-1H-pyrrolo[2,3-b]pyridine (3) (10 g, 65 mM) in chloroform (260 ml). The reaction mixture was stirred for 60 minutes at 0° C. The reaction mixture was then hydrolysed with water and the pH of the solution was adjusted to 10. The resulting solid was removed by filtration, and the aqueous was extracted with dichloromethane. The organic was washed with water, dried over magnesium sulfate and concentrated in vacuo to afford the title compound (10.5 g, 69%). 1H NMR (DMSO-d6) 7.8 (1H, s), 7.9 (1H, s), 8.3 (1H, s)

1. customThe resulting solid was removed by filtration
2. extractionthe aqueous was extracted with dichloromethane
3. washThe organic was washed with water
4. dry with materialdried over magnesium sulfate
5. concentrationconcentrated in vacuo

ORD-Eintrag

ord-40a04e16cbcc40758759ab6174f32eee

Quelldatensatz

uspto-grants-2015_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08987454B2