Bis(2-bromoethyl) ether → HCID 178518177, Verbindung

Temperatur

-78 °C

To the mixture of 2-((1S,2S,4R)-bicyclo[2.2.1]heptan-2-ylamino)thiazol-4(5H)-one (840 mg, 4.0 mmol) in THF (5.0 mL) was added LDA (2.0 M, 20 mL) at −78° C. The resulting mixture was stirred for 10 min at −78° C., and then 1-bromo-2-(2-bromoethoxy)ethane (3.71 g, 16 mmol) was added. The mixture was allowed to warm to room temperature and then stirred overnight. A sat'd solution of NaH2PO4 was added, and it was extracted with EtOAc. The organic layer was washed with sat'd NH4Cl, dried over MgSO4, filtered, and concentrated in vacuo. The crude residue was purified through flash chromatography (4:1:0.05; CH2Cl2/EtOAc/MeOH) to give the title compound as off-white solid. MS (ES+): 281 (M+H)+.

1. temperatureto warm to room temperature
2. stirringstirred overnight
3. extractionit was extracted with EtOAc
4. washThe organic layer was washed with sat'd NH4Cl
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe crude residue was purified through flash chromatography (4:1:0.05; CH2Cl2/EtOAc/MeOH)

ORD-Eintrag

ord-d9390a08a4fb4fd890ff708357bfb600

Quelldatensatz

uspto-grants-2013_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08541592B2