Hydrochloric Acid → 1-amino-3-[7-(benzyloxy)-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl]-4-hydroxyquinolin-2(1H)-one

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

The product of Example 304E (3.13 g, 6.51 mmol) was suspended in 10% potassium hydroxide solution (50 mL), heated at 125° C. for 24 hours then at 140° C. for 24 hours. The mixture was poured into ice and 1 M hydrochloric acid, filtered, and dried to give the title compound (2.03 g, 67%). MS (ESI−) m/z 461 (M−H)−. 1H NMR (300 MHz, DMSO-d6) δ ppm 5.18 (s, 2 H) 5.33 (s, 2 H) 7.06 (m, 1 H) 7.25 (m, 3 H) 7.43 (m, 6 H) 7.69 (d, J=7.72 Hz, 1 H) 8.06 (d, J=8.09 Hz, 1 H) 16.31 (s, 1 H).

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