反应详情

2-fluoro-5-((8-methoxy-4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoic acid (125) (200 mg, 0.61 mmol) and 4-ethoxypiperidine (79 mg, 0.61 mmol) were added to DMF (5 mL), to this was added N-ethyl-N-isopropylpropan-2-amine (0.163 mL, 0.91 mmol) and then HBTU (347 mg, 0.91 mmol). The solvent was then removed to give a brown solid, which was dissolved in acetonitrile. A white solid precipitated, which was filtered and dried to afford the desired material as a white crystalline solid (200 mg, 74.7% yield); 1H NMR (400.132 MHz, CDCl3) δ 1.20 (3H, t), 1.46-1.62 (1H, m), 1.63-1.82 (2H, m), 1.87-1.96 (1H, m), 3.07-3.18 (1H, m), 3.43-3.59 (5H, m), 3.77-3.82 (3H, m), 3.99-4.11 (1H, m), 4.45 (2H, s), 6.91-7.02 (1H, m), 7.11-7.28 (3H, m), 7.62-7.71 (1H, m), 8.03-8.08 (1H, m), 10.29 (1H, s); m/z (ES+) (M+H)+=440.41; HPLC RT=1.87 min.

1. customThe solvent was then removed
2. customto give a brown solid, which
3. customA white solid precipitated
4. filtrationwhich was filtered
5. customdried