p-Fluoronitrobenzene → HCID 68747789, compound

Temperature

100 °C

To a flask equipped with a magnetic stirrer, reflux condenser, and a nitrogen inlet was added N,N-di-n-hexylbenzene1,4-diamine (22.3 grams 0.09 moles), 1-fluoro-4-nitrobenzene (4.3 grams. 0.03 moles) and anhydrous methyl sulfoxide (40 ml). The contents of the flask were heated at 100° C. for 3 days; cooled to room temperature; partitioned between ethyl acetate (200 ml) and water (100 ml). The ethyl acetate extract was washed with water (4×100 ml) followed by brine (50 ml). The ethyl acetate extract was dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo to yield a dark brown oil containing excess N,N-di-n-hexyl-N-(4-nitrophenyl)amine. The dark brown oil was chromatographed on silica gel, eluting with hexane/ethyl acetate gradient to afford 11.8 grams of the desired product as a dark purple color oil. 1H NMR (DMSO-d4) δ 8.95(bs, 1H), 8.0(d, 2H), 7.0(d, 2H), 6.8(d, 2H), 6.6(d, 2M), 3.25(t, 4H), 1.5(pent, 4H), 1.2-1.4(m, 12H), 0.9(t, 6H),

1. customTo a flask equipped with a magnetic stirrer
2. temperaturereflux condenser, and a nitrogen inlet
3. temperaturecooled to room temperature
4. custompartitioned between ethyl acetate (200 ml) and water (100 ml)
5. extractionThe ethyl acetate extract
6. washwas washed with water (4×100 ml)
7. extractionThe ethyl acetate extract
8. dry with materialwas dried over anhydrous magnesium sulfate
9. filtrationfiltered
10. concentrationconcentrated in vacuo
11. customto yield a dark brown oil
12. customThe dark brown oil was chromatographed on silica gel
13. washeluting with hexane/ethyl acetate gradient

ORD record

ord-07df3d692def4102931c19cfaca8a21b

Source dataset

uspto-grants-2010_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07683017B2