Bromoacetyl bromide → 2-Bromo-N-((S)-2-hydroxy-2-phenyl-ethyl)-acetamide

Temperatur

0 °C

To a cold (0° C.) biphasic solution of (S)-(+)-2-amino-1-phenylethanol (6.2 g, 45.2 mmol) in EtOAc (450 mL) and saturated aqueous NaHCO3 (125 mL) was added bromoacetyl bromide (4.32 mL, 49.7 mmol) via syringe. The mixture was stirred at 0° C. for 1 h then layers were separated. The aqueous layer was extracted with EtOAc (2×100 mL) then combined organics were dried with Na2SO4, filtered, and concentrated to dryness to afford the desired product as a residue (11.6 g, quant.) that was used in the next transformation: ES MS (+) m/z 258.

1. customlayers were separated
2. extractionThe aqueous layer was extracted with EtOAc (2×100 mL)
3. dry with materialcombined organics were dried with Na2SO4
4. filtrationfiltered
5. concentrationconcentrated to dryness

ORD-Eintrag

ord-0f41999e5516492d8bc0bb872ca32808

Quelldatensatz

uspto-grants-2009_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07595397B2