反应详情

温度

50 °C

To a stirring solution of methyl 4-hydroxybenzoate 191 (1.08 g, 7.10 mmol) and 4-(2-chloroethyl)morpholine hydrochloride 192 (1.45 g, 7.82 mmol) in acetonitrile was added potassium carbonate (2.95 g, 21.3 mmol). The reaction mixture was heated to 50° C. overnight then cooled to rt and the resulting precipitate was filtered and washed with methanol to provide methyl 4-(2-morpholinoethoxy)benzoate 193 (2.67 g, 142%). 1H NMR: (DMSO) δ (ppm): 400 MHz, (DMSO) d (ppm): 7.87 (s, J=9.0 Hz, 2 h), 7.03 (d, J=9.0 Hz, 2H), 4.15 (t, J=5.7 Hz, 2H), 3.80 (s, 3H), 3.56 (t, J=4.5 Hz, 4H), 2.69 (t, J=5.7 Hz, 4H), 2.47 (m, 4H). MS: 265.13 (calc), 266.1 (obs).

1. temperaturethen cooled to rt
2. filtrationthe resulting precipitate was filtered
3. washwashed with methanol