反应详情

温度

110 °C

A mixture of 4-aminoquinazoline (2.9 g) and 2,2-dimethyl-5-ethoxymethylene-1,3-dioxane-4,6-dione (4.46 g) in N,N-dimethylformamide (20 ml) was stirred for 1 hour and 10 minutes at 110° C. The resultant mixture was cooled to ambient temperature and allowed to stand overnight to give crystals, which were separated by filtration and washed with a mixture of ethyl acetate and hexane to give crystalline 2,2-dimethyl-5-[(4-quinazolinyl)amino]methylene-1,3-dioxane-4,6-dione (4.1 g).

1. waitto stand overnight
2. customto give crystals, which
3. customwere separated by filtration
4. washwashed with a mixture of ethyl acetate and hexane