Triethylamine → 8-(2,6-Dichloropyrimidin-4-yl)-3-oxa-8-azabicyclo[3.2.1]octane

Temperatur

0 °C

In a 250 mL round-bottomed flask was placed 2,4,6-trichloropyrimidine (8, 0.575 mL, 5 mmol) in EtOH (20 mL) to give a colorless solution. 3-oxa-8-azabicyclo[3.2.1]octane hydrochloride (33, 748 mg, 5.00 mmol) was added and the solution was cooled to 0° C. Triethylamine (2.091 mL, 15 mmol) was added slowly and the mixture was allowed to slowly warm to room temperature. The mixture was stirred at room temperature for one hour and was then concentrated under reduced pressure. The residue was dissolved in ethyl acetate and washed with sat NaHCO3. The organic phase was dried over MgSO4, filtered and concentrated. The crude product was added to a silica gel column and was eluted with ethyl acetate in hexanes (5-20%) to give the title compound (980 mg, 75%) as a white solid.

1. customIn a 250 mL round-bottomed flask was placed
2. temperatureto slowly warm to room temperature
3. concentrationwas then concentrated under reduced pressure
4. dissolutionThe residue was dissolved in ethyl acetate
5. washwashed
6. dry with materialThe organic phase was dried over MgSO4
7. filtrationfiltered
8. concentrationconcentrated
9. additionThe crude product was added to a silica gel column
10. washwas eluted with ethyl acetate in hexanes (5-20%)

ORD-Eintrag

ord-22a39b59b65b436880a9da797fd31460

Quelldatensatz

uspto-grants-2014_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08835429B2