Chloroacetyl chloride → 3-(2-chloro-acetylamino)-N-cyclopropyl-4-methylbenzamide

Participants

Reaction Conditions

Reaction Steps

To a suspension of 3-amino-N-cyclopropyl-4-methylbenzamide hydrochloride (1A) (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 25.3 g (95% yield) of 3-(2-chloro-acetylamino)-N-cyclopropyl-4-methylbenzamide, mp: 150° C. (dec.); 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; Anal. Calcd for C13H15ClN2O2: C, 58.54; H, 5.66; N, 10.50; Cl, 13.29. Found: C, 53.72; H, 5.95; N, 9.65; Cl, 13.52.

Provenance & Evidence