Potassium Carbonate → HCID 57962040, Verbindung

Temperatur

80 °C

A solution of tert-butyl (3-aminophenyl)carbamate (1.0 g, 4.8 mmol) and potassium carbonate (1.3 g, 9.6 mmol) in N,N-dimethylformamide (10 mL) was treated with a solution of 1-(2-bromoethoxy)-3-nitrobenzene (1.2 g, 5.0 mmol) in N,N-dimethylformamide (5 mL) was stirred at 20° C. for 2 h and at 80° C. for 16 h. The reaction mixture was diluted with water (100 mL) and extracted with ethyl acetate (3×80 mL). The combined organic layers were washed with water and brine, dried over anhydrous sodium sulfate, filtered, and evaporated to give the desired product as a crude residue. This material was purified by flash column chromatography to give the desired product (1.0 g, 56%) as a yellow gum. LCMS for C19H24N3O5 (M+H)+: m/z=374.2.

1. extractionextracted with ethyl acetate (3×80 mL)
2. washThe combined organic layers were washed with water and brine
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationfiltered
5. customevaporated

ORD-Eintrag

ord-568ddf8abf204858902f2ad25f33ecb3

Quelldatensatz

uspto-grants-2014_10

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08871753B2