反应详情

To a solution of N-(4-(2-aminoethoxy)-3-(1-methyl-1H-pyrazol-5-yl)phenyl)-3-methoxybenzamide (0.5000 g, 1.365 mmol) and N,N-Diisopropylethylamine (0.2383 mL, 1.365 mmol) in 1 mL of was added dropwise, 2-Chloroethyl chloroformate (0.1951 g, 1.365 mmol). The reaction mixture was stirred overnight at ambient temperature. Ethanol was removed under vacuum and the crude was purified by preparative LCMS (m/z=472). The proper fractions were collected and lyophilized to afford the title compound as an off-white solid in 38% yield. LCMS m/z (%)=472 (M+H 35Cl, 100), 474 (M+H 37Cl, 40). 1H NMR (400 MHz, CDCl3) δ 8.16 (s, 1H), 7.71 (d, J=2.16 Hz, 1H), 7.68 (d, J=2.01 Hz, 1H), 7.45-7.34 (m, 3H), 7.08 (d, J=8.08 Hz, 1H), 6.98 (d, J=8.08 Hz, 1H), 6.31 (bs, 1H), 7.19-7.13, (m, 2H), 5.18 (bt, J=5.80 Hz, 1H), 4.28 (t, J=6.01 Hz, 2H), 4.03 (t, J=4.80 Hz, 2H), 3.85 (s, 3H), 3.78 (s, 3H), 3.65 (t, J1=5.80 Hz, 2H), 3.45 (q, J=11.10 Hz, 2H).

1. customEthanol was removed under vacuum
2. customthe crude was purified by preparative LCMS (m/z=472)
3. customThe proper fractions were collected