反应详情

温度

120 °C

To a solution of 1′-[(2-chloro-1,3-thiazol-5-yl)methyl]spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one (0.10 g, 0.24 mmol) in N,N-dimethylformamide (5 mL) was added 2 M dimethyl amine in tetrahydrofuran (2.0 mL, 4.0 mmol) under nitrogen in a sealed tube. The reaction mixture was heated at 120° C. for 16 h. The reaction was quenched with the water, then extracted with ethyl acetate (2×50 mL). The combined organic solution was dried over sodium sulfate, filtered, and the filtrate was concentrated to dryness. The residue was purified by flash chromatography with 30% ethyl acetate in hexanes to afford 1′-{[2-(dimethylamino)-1,3-thiazol-5-yl]methyl}spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one (0.08 g, 76%) as a colorless solid: mp 200-202° C.; 1H NMR (300 MHz, CDCl3) δ 7.27 (ddd, J=7.5, 7.5, 0.9 Hz, 1H), 7.20 (s, 1H), 7.15 (d, J=7.5 Hz, 1H), 7.08-6.95 (m, 2H), 6.51 (s, 1H), 6.14 (s, 1H), 5.91-5.84 (m, 2H), 5.05 (d, J=15.6 Hz, 1H), 4.93 (d, J=9.0 Hz, 1H), 4.84 (d, J=15.6 Hz, 1H), 4.65 (d, J=9.0 Hz, 1H), 3.06 (s, 6H); 13C NMR (75 MHz, CDCl3) δ177.2, 172.0, 156.1, 149.0, 142.5, 141.5, 139.1, 132.4, 129.1, 124.1, 123.7, 119.7, 119.5, 109.2, 103.3, 101.6, 93.7, 80.5, 58.2, 40.4, 37.2; MS (ES+) m/z 422.1 (M+1).

1. customThe reaction was quenched with the water
2. extractionextracted with ethyl acetate (2×50 mL)
3. dry with materialThe combined organic solution was dried over sodium sulfate
4. filtrationfiltered
5. concentrationthe filtrate was concentrated to dryness
6. customThe residue was purified by flash chromatography with 30% ethyl acetate in hexanes