Dimethylformamide → 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)-N,N-dimethylacetamide

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Reaction Steps

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 (0.050 g, 0.00011 mol) dissolved in N,N-Dimethylformamide (1.79 mL, 0.0231 mol) and treated sequentially with N,N-Diisopropylethylamine (0.119 mL, 0.000686 mol) Dimethylamine hydrochloride (0.0373 g, 0.000457 mol) then N,N,N′,N′-Tetramethyl-O-(7-azabenzotriazol-1-yl)uronium Hexafluorophosphate (0.0521 g, 0.000137 mol). Stir at r.t. 2 h. Add sat. sodium bicarbonate, extract with ethyl acetate. Dry organics over sodium sulfate and concentrate to give 331, analyzed by rHPLC. MS: (ESI+)=466.2. 1H NMR (400 MHz, DMSO) δ 9.10 (s, 1H), 7.89 (s, 1H), 7.84 (s, 1H), 6.34 (s, 1H), 6.01-5.79 (m, 1H), 4.50 (d, J=10.0 Hz, 4H), 3.53 (s, 4H), 3.18 (s, 2H), 3.03 (s, 3H), 2.82 (s, 3H), 1.47 (d, J=6.5 Hz, 6H).

Provenance & Evidence