反应详情

温度

-20 °C

To a suspension of 3-amino-N-cyclopropyl-4-methyl-benzamide hydrochloride (Compound 1D, 22.7 g, 0.1 mol) in acetone (200 mL) was added 4-methyl morpholine (42.4 mL, 0.3 mol). The solution was cooled to −20° C. and chloroacetyl chloride (12 mL, 0.15 mol) was added dropwise. The reaction mixture was stirred at −10° C. for 10 min before being quenched with H2O (200 mL). The precipitate formed was collected by vacuum filtration and dried to provide 3-(2-chloro-acetylamino)-N-cyclopropyl-4-methyl-benzamide (38C) (25.3 g, 95% yield). mp: decomp 150° C.; 1H NMR(500 MHz, DMSO-D6) δ 9.83 (s, 1H), 8.39 (d, J=3.8 Hz, 1H), 7.82 (s, 1H), 7.58 (d, J=6.6 Hz, 1H), 7.28 (d, J=8.3, 1H), 4.32 (s, 2H), 2.82 (m, 1H), 2.22 (s, 3H), 0.66 (m, 2H), 0.56 (m, 2H); 13C NMR (100 MHz, DMSO-D6) δ: 167.2, 165.4, 136.0, 135.8, 132.8, 130.5, 124.8, 124.7, 43.4, 23.4, 18.1, 6.0;

1. custombefore being quenched with H2O (200 mL)
2. customThe precipitate formed
3. filtrationwas collected by vacuum filtration
4. customdried