反应详情

2-(4-(2-(1-Isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydroimidazo[1,2-d]pyrido[3,4-f][1,4]oxazepin-9-yl)piperazin-1-yl)acetic acid from Example 331 (0.050 g, 0.11 mmol) dissolved in N,N-Dimethylformamide (1.79 mL, 0.0231 mol) and treated sequentially with N,N-Diisopropylethylamine (0.119 mL, 0.686 mmol) Ammonium chloride (0.0244 g, 0.457 mmol) then N,N,N′,N′-Tetramethyl-O-(7-azabenzotriazol-1-yl)uronium Hexafluorophosphate (0.0521 g, 0.137 mmol). Stir at r.t. 2 h. Add sat. sodium bicarbonate, extract with ethyl acetate. Dry organics over sodium sulfate and concentrate to give 332, analyzed by rHPLC. MS: (ESI+)=466.2. 1H NMR (400 MHz, DMSO) δ 9.11 (s, 1H), 7.89 (s, 1H), 7.85 (s, 1H), 7.20 (s, 2H), 6.35 (s, 1H), 5.93 (dt, J=13.7, 7.0 Hz, 1H), 4.50 (d, J=10.4 Hz, 4H), 3.57 (s, 5H), 2.91 (s, 2H), 1.47 (d, J=6.5 Hz, 6H).

1. custom2 h
2. extractionAdd sat. sodium bicarbonate, extract with ethyl acetate
3. concentrationDry organics over sodium sulfate and concentrate