反应详情

5-[(3,5-Dimethoxyphenylamino)-methylene]-2,2-dimethyl[1,3]dioxane-4,6-dione (400 mg, 1.30 mmol) in diphenyl ether (5 mL) and heated at 200° C. for 30 min. The reaction mixture was cooled to rt and hexane was added and stirred for 30 min. The brown solid was filtered and dried to yield 5,7-dimethoxy-1H-quinolin-4-one LCMS m/z=206 (M+1).

1. filtrationThe brown solid was filtered
2. customdried