N-(pyridin-2-ylmethyl)ethanamine → N-ethyl-N-(2-pyridinylmethyl)-2-(4-chlorophenyl)-7-methylimidazo[1,2-a]pyridine-3-acetamide.hydrochloride

Participants

Reaction Steps

According to the method of Example 13, 2-(4-chlorophenyl)-7-methylimidazo[1,2-a]pyridine-3-acetic acid and N-(2-pyridinylmethyl)ethylamine were used as raw materials for synthesis, salified with hydrochloric acid-ethyl ether solution in dry dichloromethane, then crystallized with methanol-tetrahydrofuran to obtain a corresopnding hydrochloride pure product. Yellow solid powder, yield 51.2%. m.p. 178-180° C., ESI-MS m/z: 420[M+H]+, 1H NMR(D2O, 400 MHz)δ: 0.95(t, 0.5H, J=7.00 Hz), 1.14(t, 2.5H, J=7.00 Hz), 2.38(s, 2.5H), 2.40(s, 0.5H), 3.30(q, 0.4H, J=7.00 Hz), 3.56(q, 1.6H, J=7.00 Hz), 4.14(s, 0.4H), 4.36(s, 1.6H), 4.76(s, 1.6H), 4.86(s, 0.4H), 7.14-7.24(m, 1H), 7.30-7.46(m, 4H), 7.50(s, 1H), 7.69-7.75(m, 2H), 8.11-8.13(m, 1H), 8.33-8.53(m, 2H).

Provenance & Evidence