Hydrochloric Acid → 6-(6,7-Dimethoxyquinazolin-4-yloxy)-1-naphthoic acid

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

6-Hydroxy-1-naphthoic acid (1.43 g, 7.6 mmol) and 38 ml of DMSO were stirred at room temperature while cesium carbonate (7.5 g, 22.9 mmol) and 4-chloro-6,7-dimethoxy-quinazoline (2.05 g, 9.14 mmol) were added. The mixture was heated at 140° C. for 3 hours. The mixture was cooled to room temperature and diluted with 40 mL of H2O. The mixture was neutralized with 2 N HCl to 6.5. The deposited solids were collected by vacuum filtration, washed with H2O, dried under vacuum and recrystallized from methanol to give the title compound (1.68 g, 59% yield) as a brown solid. LC-MS (m/z) 377 (M+1).

Herkunft & Nachweise