Tetrabutylammonium Fluoride → HCID 58631078, Verbindung

To a THF (20 ml) solution of (4S,5R)-tert-butyl 4-(fluoromethyl)-2,2-dimethyl-5-(4-((trimethylsilyl)ethynyl)phenyl)oxazolidine-3-carboxylate (1.65 g, 4.1 mmol) that had been cooled to −78° C. (dry ice/acetone) is added tetra-n-butyl-ammonium fluoride (5 ml of 1M solution in tetrahydrofuran, 5 mmol). The reaction is stirred at −78° C. for 1 hour. The reaction mixture is quenched (while at −78° C.) by the addition of saturated aqueous ammonium chloride solution (2 ml). The reaction mixture is warmed to room temperature and diluted with ethyl acetate (50 ml). The organic phase is washed with water (3×25 ml), dried over sodium sulfate and the volatiles removed by evaporation to give the title product (1.35 g).

1. customThe reaction mixture is quenched (while at −78° C.)
2. additionby the addition of saturated aqueous ammonium chloride solution (2 ml)
3. temperatureThe reaction mixture is warmed to room temperature
4. additiondiluted with ethyl acetate (50 ml)
5. washThe organic phase is washed with water (3×25 ml)
6. dry with materialdried over sodium sulfate
7. customthe volatiles removed by evaporation

ORD-Eintrag

ord-751296632199487ca06a9b0ba3bd4e7f

Quelldatensatz

uspto-grants-2016_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09428528B2