Reaction Steps
To a solution of (1S)-2-chloro-N-{7-chloro-2-[1-(3-ethoxy-4-methoxy-phenyl)-2-methanesulfonyl-ethyl]-3-oxo-2,3-dihydro-1H-isoindol-4-yl}-acetamide (250 mg, 0.48 mmol) in CH3CN (10 ml) was added morpholine (0.17 ml, 1.94 mmol). The mixture was heated at 70° C. for 2 hrs. The reaction mixture was concentrated on rota-vap and extracted with water (50 ml) and EtOAc (50 ml). The organic layer was washed with water (50 ml), brine (25 ml), dried over Na2SO4 and concentrated. The resulted oil was purified by chromatography to give an oil which was stirred with HCl in ether (3 ml) to give (1S)—N-{7-chloro-2-[1-(3-ethoxy-4-methoxy-phenyl)-2-methanesulfonyl-ethyl]-3-oxo-2,3-dihydro-1H-isoindol-4-yl}-2-morpholin-4-yl-acetamide; hydrochloride as a white solid (200 mg, 68% yield): mp, 198-200° C.; 1H NMR (CDCl3 with D2O added) δ 1.46 (t, J=7.0 Hz, 3H, OCH2CH3), 2.68 (broad, 4H, CH2NCH2 on morpholino ring), 2.99 (s, 3H, SCH3), 3.24 (broad, 2H, CH2NCO), 3.72 (dd, J=5, 15 Hz, 1H, CHHSO2), 3.87-3.92 (m, 7H, OCH3+OCH2OCH2 on morpholine ring), 4.05-4.23 (m, 4H, CHHSO2+CNHH+OCH2CH3), 4.40 (d, J=15 Hz, 1H, CHHN), 5.71-5.77 (m, 1H, NCH), 6.86-6.97 (m, 3H, Ar), 7.40d, J=8 Hz, 1H, Ar), 8.52 (d, J=8 Hz, 1H, Ar); 13C NMR (CDCl3) δ 14.75, 41.71, 47.09, 51.22, 51.59, 55.09, 56.02, 63.81, 64.10, 64.81, 105.68, 111.67, 112.28, 119.32, 120.0, 120.27, 124.03, 128.81, 133.20, 134.72, 139.41, 149.09, 150.01, 168.55. Anal Calcd for C26H33Cl2N3O7S+0.53H2O: C, 51.02; H, 5.61; N, 6.87. Found: C, 50.70; H, 5.38; N, 6.76; 0.98% H2O.
