Benzaldehyde → HCID 10086774, Verbindung

Temperatur

25 °C

To a solution of 962 mg (4.56 mmol) of the imine derived from benzaldehyde and p-methoxy aniline, and 0.85 mL (6.07 mmol) of triethylamine in 15 mL of CH2Cl2 at -20° C. was added dropwise a solution of 413 mg (3.04 mmol) of α-acetoxy acetyl chloride in 15 mL of CH2Cl2. The reaction mixture was allowed to warm to 25° C. over an 18 h period. The reaction mixture was then diluted with 100 mL of CH2Cl2 and the solution was extracted with 30 mL of 10% aqueous HC1. The organic layer was washed with 30 mL of water and 30 mL of saturated aqueous sodium bicarbonate, dried over sodium sulfate, and concentrated to provide a solid mass. The solid was titurated with 50 mL of hexane and the mixture was filtered. The remaining solid was recrystallized from ethyl acetate/hexane to give 645 mg (68%) of cis-1-p-methoxyphenyl-3-acetoxy-4-phenylazetidin-2-one as white crystals, m.p. 163° C.

1. extractionthe solution was extracted with 30 mL of 10% aqueous HC1
2. washThe organic layer was washed with 30 mL of water and 30 mL of saturated aqueous sodium bicarbonate
3. dry with materialdried over sodium sulfate
4. concentrationconcentrated
5. customto provide a solid mass
6. filtrationthe mixture was filtered
7. customThe remaining solid was recrystallized from ethyl acetate/hexane

ORD-Eintrag

ord-cb889c05fce445b3b68d11a0328fc165

Quelldatensatz

uspto-grants-1996_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05574156