Dimethyl Sulfoxide → HCID 86700483, Verbindung

Temperatur

120 °C

A round bottom flask was charged with 2,3-difluoro-6-nitroaniline (0.50 g, 2.87 mmol, 1.00 equiv.) and 4-bromobenzylamine (0.959 g, 5.15 mmol, 1.80 equiv.). Dimethyl sulfoxide (2.5 mL) was then added flowed by Et3N (0.968 mL, 6.88 mmol, 2.40 equiv.) and I2 (catalytic, 10 mg). The reaction mixture was heated to 120° C. and stirred for 3 h. The reaction mixture was then cooled to ambient temperature, diluted with water (75 mL) and extracted with Ethyl acetate (2×60 mL). The organic layer was dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to give crude material, which was purified by silica gel column chromatography (10% ethyl acetate/hexane) to afford compound 3 as the desired product (0.869 g, 89%).

1. temperatureThe reaction mixture was then cooled to ambient temperature
2. extractionextracted with Ethyl acetate (2×60 mL)
3. dry with materialThe organic layer was dried over anhydrous Na2SO4
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customto give crude material, which
7. customwas purified by silica gel column chromatography (10% ethyl acetate/hexane)

ORD-Eintrag

ord-7525e736b3a34eaeb8f5998af24c6023

Quelldatensatz

uspto-grants-2014_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08916133B2