Cl.[Cl:2][C:3]1[C:8]([CH2:9][NH2:10])=[CH:7][CH:6]=[CH:5][N:4]=1.O1CCCC1.C(N(C(C)C)CC)(C)C.[Cl:25][C:26]1[C:27]([Cl:35])=[C:28]([N:32]=[C:33]=[S:34])[CH:29]=[CH:30][CH:31]=1>O>[Cl:2][C:3]1[C:8]([CH2:9][NH:10][C:33]([NH:32][C:28]2[CH:29]=[CH:30][CH:31]=[C:26]([Cl:25])[C:27]=2[Cl:35])=[S:34])=[CH:7][CH:6]=[CH:5][N:4]=1To an oven-dried, N2-purged, 25-mL, round-bottomed flask containing a magnetic stir bar were added the product of Example 141A, anhydrous tetrahydrofuran (5 mL), and diisopropylethylamine (646 mg, 0.886 mL, 5.00 mmol). The flask was sealed with a septum and neat dichlorophenylisothiocyanate (306 mg, 0.213 mL, 1.50 mmol) was added via syringe. The reaction mixture was stirred at room temperature overnight. Water (10 mL) was added, and the reaction was transferred to a separatory funnel. The mixture was extracted with dichloromethane (3×10 mL). The combined organic extracts were dried over magnesium sulfate, filtered, and concentrated by rotary evaporator to give a brown solid. The product was recrystallized from ethyl acetate/hexanes to give 197 mg (47%) of the title compound as a white powder. MS (ESI″) m/z 345.9 (M+H)+; 1H NMR (DMSO-d6) δ 4.75 (d, J=5.1 Hz, 2H), 7.37 (dd, J=8.0, 8.0 Hz, 1H), 7.46 (dd, J=7.5, 4.7 Hz, 1H), 7.55 (d, J=8.1 Hz, 1H), 7.61 (d, J=7.8 Hz, 1H), 7.76 (dd, J=7.6, 1.5 Hz, 1H), 8.32 (dd, J=4.7, 1.7 Hz, 1H), 8.44 (br s, 1H), 9.68 (br s, 1H).
Wird geladen…
