Water → HCID 10116596, Verbindung

To a solution containing the compound of Example 3 (0.08 g., 0.24 mmol) in N,N-dimethylformamide (5.00 mL) was added sodium hydride (0.011 g., 60% in oil, 0.29 mmol) at 0° C. The mixture was stirred at room temperature for 20 minutes, then cooled to 0° C. 4-Phenoxybutyl bromide (0.072 g., 0.32 mmol) was added to the mixture, the resulting mixture was stirred at room temperature for 16 hours. Water and ethyl acetate then were added to the mixture, and the organic and aqueous phases were separated. The aqueous layer then was extracted with ethyl acetate (2×). The combined ethyl acetate solution was dried (MgSO4) and filtered. The filtrate was concentrated in vacuo. The residue was subjected to preparative thin layer chromatography (silica gel, 50% EtOAc/hexane) to yield the alkylated compound (0.033 g, 29%) as a light yellow oil. 1H NMR (300 MHz, CDCl3) δ 7.42, 7.13, 7.03, 6.95, 6.87, 6.71, 5.81, 4.69-4.67, 4.09, 3.93, 3.75, 3.17-3.14, 2.97-2.94, 1.87-1.76; MS (ESI+) m/z 479 (M++1).

1. temperaturecooled to 0° C
2. stirringthe resulting mixture was stirred at room temperature for 16 hours
3. customthe organic and aqueous phases were separated
4. extractionThe aqueous layer then was extracted with ethyl acetate (2×)
5. dry with materialThe combined ethyl acetate solution was dried (MgSO4)
6. filtrationfiltered
7. concentrationThe filtrate was concentrated in vacuo

ORD-Eintrag

ord-60c96e541ffd49828713121b8ae6bfeb

Quelldatensatz

uspto-grants-2003_01

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06503899B2