Potassium Iodide → Glycine, N-(2,2-difluoroethyl)-, ethyl ester

2,2-difluoroethylamine (4.0 g) was added to a suspension of ethyl bromoacetate (5.4 mL), potassium iodide (0.82 g), diisopropylethylamine (9.8 mL) in acetonitrile (100 mL) and the mixture was stirred at RT for 25 h. The mixture was concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel to afford the sub-title compound (7.0 g) as a colorless oil; 1H NMR (300 MHz, CDCl3); 5.82 (1H, tt), 4.18 (2H, q), 3.46 (2H, s), 3.00 (2H, dt), 1.26 (3H, t).

1. concentrationThe mixture was concentrated under reduced pressure
2. customThe residue was purified by flash column chromatography on silica gel

ORD-Eintrag

ord-b053c74e468b4549b3254fe9cae52beb

Quelldatensatz

uspto-grants-2016_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09376398B2