反应详情

To a solution of 2-(2-(4-chloro-1-methyl-1H-pyrazol-5-yl)-4-(3-(trifluoromethyl)benzamido)phenoxy)acetic acid (0.060 g, 0.13 mmol) and N,N-diisopropylethylamine (0.034 g, 0.26 mmol) in dichloromethane (1.3 mL) was added BTU (0.075 g, 0.20 mmol) followed by 2-methoxyethylamine (0.015 g, 0.2 mmol). After 1.5 hours the reaction was diluted with ethyl acetate, washed with water, 1 M HCl (×3) and brine, dried over magnesium sulfate and concentrated. The residue was purified by flash chromatography (1:1-1:0 EtOAc/hexane) to give a white solid (57.0 mg, 84%). LCMS m/z (%)=511 (M+H, 35Cl, 100), 513 (M+H, 37Cl, 30). 1H NMR (400 MHz, CDCl3) δ 3.35 (s, 3H) 3.39-3.52 (m, 4H) 3.78 (s, 3H) 4.52 (s, 2H) 6.60 (br. s., 1H) 7.02 (d, J=9.09 Hz, 1H) 7.55 (s, 1H) 7.63-7.67 (m, 2H) 7.74 (dd, J=8.97, 2.91 Hz, 1H) 7.84 (d, J=6.82 Hz, 1H) 7.92 (s, 1H) 8.08 (d, J=6.57 Hz, 1H) 8.14 (s, 1H).

1. washwashed with water, 1 M HCl (×3) and brine
2. dry with materialdried over magnesium sulfate
3. concentrationconcentrated
4. customThe residue was purified by flash chromatography (1:1-1:0 EtOAc/hexane)