反应详情

A Solution of 2-(2-morpholin-4-yl-2-oxo-ethyl)-2-(3-phenyl-propyl)-malonic acid monoethyl ester (809 mg, 2.14 mmol) in toluene (25 ml) was heated under reflux for 23 hours. The colorless solution was concentrated under reduced pressure, the residue was taken up in diethyl ether (50 ml), washed with saturated NaHCO3 and dried over MgSO4. The solvent was evaporated under reduced pressure to give 2-(2-morpholin-4-yl-2-oxoethyl)-5-phenyl-pentanoic acid ethyl ester as yellow oil (617 mg); 1H NMR (CDCl3) 7.37–7.1 (m, 5H), 4.2 (m, 2H), 3.8–3.4 (m, 8H), 3.0 (m, 1H), 2.75 (dd, J=15.9, 9.4 Hz, 1H), 2.65 (m, 2H), 2.35 (dd, J=15.9, 5.1 Hz, 1H), 1.8–1.55 (m, 4H), 1.29 (t, J=7.1 Hz, 3H). MS: 334 (MH+).

1. temperatureunder reflux for 23 hours
2. concentrationThe colorless solution was concentrated under reduced pressure
3. washwashed with saturated NaHCO3
4. dry with materialdried over MgSO4
5. customThe solvent was evaporated under reduced pressure