反应详情

A mixture of 2′-trifluoromethanesulfonyl-biphenyl-3,4-diamine (0.042 g, 0.133 mmol) and 2-(4-trifluoromethyl-phenoxy)-acetimidic acid ethyl ester hydrochloride (0.045 g, 0.159 mmol, Example 1.1) in EtOH (4 mL) was stirred at room temperature for 12 hours. The reaction was concentrated to give a residue, which was purified by chromatography (silica, hexanes: EtOAc, 1:2) to afford the product as brown oil (0.065 g, 98%). 1H NMR (400 MHz, CD3OD) δ (ppm): 8.25 (d, 1H, J=7.6 Hz), 7.92 (td, 1H, J=8.4 Hz, J=1.6 Hz), 7.77 (td, 1H, J=8.4 Hz, J=1.2 Hz), 7.65-7.54 (m, 3H), 7.27-7.20 (m, 4H), 7.14 (d, 1H, J=8.4 Hz), 5.45 (s, 2H). Mass Spectrum (LCMS, ESI pos.) Calcd. For C22H15F6N2O3S: 501.4 (M+H), Found 501.2.

1. concentrationThe reaction was concentrated
2. customto give a residue, which
3. customwas purified by chromatography (silica, hexanes: EtOAc, 1:2)