反应详情

温度

250 °C

A mixture of biphenyl (10 ml) and diphenyl ether (30 ml) was heated at 250° C. and 5-(4-cyanophenylamino)methylidene-2,2-dimethyl-1,3-dioxane-4,6-dione (3.28 g) was added thereto. The mixture was stirred for 1 hr. The reaction mixture was cooled to 80° C. while stirring and hexane (100 ml) was added. The mixture was stirred in an ice bath for 0.5 hr. The resulting solid was collected by filtration and washed with hexane to give the object compound (1.86 g) as a yellow-brown powder.

1. temperatureThe reaction mixture was cooled to 80° C.
2. stirringwhile stirring
3. stirringThe mixture was stirred in an ice bath for 0.5 hr
4. filtrationThe resulting solid was collected by filtration
5. washwashed with hexane