Tetrabutylammonium Fluoride → HCID 10308268, compound

Participants

Reaction Steps

To a solution of 6-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-1-nitro-2-naphthol (302 mg, 0.764 mmol) in THF (12 mL) was added TBAF (0.92 mL, 0.917 mmol, 1.0 M solution in THF). The solution was stirred for 10 minutes at room temperature, poured in water. The mixture was extracted with ethyl acetate. The combined organic layers were washed with brine, dried anhydrous Na2SO4, filtered, evaporation of the solvent, and purification on a silica column (20%-40% ethyl acetate-hexane) yielded 130 mg (61%) of a orange solid. An analytical sample was further purified by recrystallization with ethyl acetate-hexane to yield the title compound as a orange solid:: mp 199-201° C.; 1H NMR (DMDO-d6): δ 6.89(2H, d, J=8.51 Hz), 7.33 (1H, d, J=9.05 Hz), 7.62 (1H, d, J=8.94 Hz), 7.63(2H, d, 8.48 Hz), 7.91 (1H, dd, J=8.87 Hz, J=1.59 Hz), 8.06 (1H, d, 9.18 Hz), 8.17 (1H, d, J=1.31 Hz), 9.64(1H, s), 11.40 (1H,s); MS (ESI) m/z280 (M−H)−.

Provenance & Evidence